Search Criteria: Research Area is "Developmental Biology Research: Neurodevelopmental Defects"
| Stock Number |
Strain Name Strain Description |
Standard Supply |
| 006494 | B6CBA-Tg(HDexon1)62Gpb/3J | Level 3 |
| This line is transgenic for the 5' end of the human HD gene carrying less than (CAG)150 repeat expansions. The transgene is ubiquitously expressed. Transgenic mice exhibit a progressive neurological phenotype that mimics many of the features of HD, including choreiform-like movements, involuntary stereotypic movements, tremor, and epileptic seizures, as well as nonmovement disorder components, including unusual vocalization. They urinate frequently and exhibit loss of body weight and muscle bulk through the course of the disease. Neurologically they develop Neuronal Intranuclear Inclusions (NII) which contain both the huntingtin and ubiquitin proteins. Previously unknown, these NII have subsequently been identified in human HD patients. The age of onset of HD symptoms is reported to occur between 9 and 11 weeks. Commonly known as the "R6/2" strain. Transgenic mice develop hyperglycemia by 12 weeks of age with a corresponding decrease in insulin levels. Pancreatic beta cells develop
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| 000676 | LP/J | Level 3 |
| LP/J mice display a high susceptibility to audiogenic seizures. This strain is also reported to have a fairly high incidence of tumors that develop later in life, including mammary tumors, lymphoma, lung and soft-tissue sarcomas. LP/J mice are also homozygous for the spontaneous mutation piebald in the endothelin receptor type B gene (Ednrbs). The piebald spontaneous mutation is the result of a mutation in the endothelin receptor type B gene, Ednrb. Mice show irregular white spotting, the amount of which is greatly influenced by minor modifying genes. They also have dark eyes. The white areas of the coat are completely lacking in neural crest-derived melanocytes, and there is a reduction in the number of melanocytes in the choroid layer of the eye is reduced. | ||
| 002810 | B6CBA-Tg(HDexon1)62Gpb/1J | Level 4 |
| This line is transgenic for the 5' end of the human HD gene carrying (CAG)115-(CAG)150 repeat expansions. The transgene is ubiquitously expressed. Transgenic mice exhibit a progressive neurological phenotype that mimics many of the features of HD, including choreiform-like movements, involuntary stereotypic movements, tremor, and epileptic seizures, as well as nonmovement disorder components, including unusual vocalization. They urinate frequently and exhibit loss of body weight and muscle bulk through the course of the disease. Neurologically they develop Neuronal Intranuclear Inclusions (NII) which contain both the huntingtin and ubiquitin proteins. Previously unknown, these NII have subsequently been identified in human HD patients. The age of onset of HD symptoms is reported to occur between nine and 11 weeks. Commonly known as the "R6/2" strain.
Transgenic mice develop hyperglycemia by 12 weeks of age with a corresponding decrease in insulin levels. Pancreatic beta cells devel
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| 002282 | BTBR T+ tf/J | Level 4 |
| BTBR mice exhibit a 100% absence of the corpus callosum and a severly reduced hippocampal commissure (Wahlsten D, 2003 Brain Res). This strain exhibits several symptoms of autism including: reduced social interactions, impaired play, low exploratory behavior, unusual vocalizations and high anxiety as compared to other inbred strains (McFarlane HG, 2008, Gen, Brain Behav; Moy SS, 2007, Behav Br Res, Scattoni ML, 2008, PLos). | ||
| 004337 | 129(Cg)-Foxg1tm1(cre)Skm/J | Repository- Live |
| This strain expresses Cre recombinase from the endogenous Foxg1 locus. Forkhead box G1 is required for telencephalon development and is expressed specifically in the telencephalon and discrete head structures. When crossed with a strain containing loxP site flanked sequence of interest, Cre-mediated recombination results in tissue-specific deletion of the target. Recombination occurs in the telencephalon, anterior optic vesicle (developing lens and retina), otic vesicle, facial and head ectoderm, olfactory epithelium, mid-hindbrain junction and pharyngeal pouches. Mice that are homozygous for the targeted mutation die perinatally. Heterozygous mutant mice are viable, fertile, normal in size and do not display any gross physical or behavioral abnormalities. This mutant mouse strain represents a model that may be useful in studies of telencephalic development. | ||
| 004293 | 129-Shhtm2Amc/J | Repository- Live |
| Mice that are homozygous for the Shhtm2Amc targeted mutation are viable, fertile, normal in size and do not display any gross physical or behavioral abnormalities. This conditional mutant contains two loxP sites flanking exon 2 of the targeted allele. Cre-mediated recombination excises exon 2 and some surrounding intronic sequence, generating a null allele. When the conditional mutant is crossed with a ubiquitously-expressing Cre recombinase carrier to remove Shh activity in the early embryo, the resulting phenotype resembles the Shh null mutation. These conditional mutant mice may be mated to strains expressing Cre recombinase to study the effects of temporal and tissue-specific ablation of the targeted allele. This mutant mouse strain represents a model that may be useful in studies of developmental defects resulting from disruption of Shh-dependent pathways.
When bred to a strain expressing Cre recombinase under the control of a tet
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| 008657 | AKR/J-agil2J/J | Repository- Live |
| 000578 | B6 x STOCK Tyrc-ch Bmp5se +/+ Myo6sv/J | Repository- Live |
| Mice homozygous for the Snell's waltzer spontaneous mutation (Myo6sv) show to a marked degree the typical circling, head-tossing, deafness, and hyperactivity of other mutant mice of this type. Homozygous mutant mice are recognizable by the age of 1 week. The abnormalities of the inner ear consist of degeneration of the entire neuroepithelium comprising the organ of Corti, the saccular and utricular maculae, and the cristae of all three semicircular canals. Although viability of homozygotes is nearly normal, breeding ability is reduced and males are more reliable breeders than females.
Specific cytoskeletal components are critical for specific cellular structures. The microvilli of intestinal brush border cells in Myo6sv homozygotes are shorter than normal. While myosin 6 is not critical for the development of hair cell stereocilia, it is essential for their maintenance. At birth the stereocilia appear nearly normal with only occasional stereocil
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| 006939 | B6.129-Fut1tm1Sdo/J | Repository- Live |
| Mice that are homozygous for the targeted mutation are viable, fertile, normal in size and do not display any gross physical or behavioral abnormalities. Alpha(1,2)fucosylated glycans are not detected in the epididymis of homozygotes. Fucosylated glycolipids (fucosyl GA1) are not detected in the pancreatic acinar glands of homozygotes. Homozygotes exhibit delayed maturation of nerve fibers in the glomerular layer of the olfactory bulb due to absence of cell surface carbohydrate, blood group H carbohydrate, expression in primary sensory neurons. The Donating Investigator reports that the beta-galatosidase is expressed. This mutant mouse strain may be useful in studies of glycosidic molecular interactions and function, and olfactory nerve pathway development. This strain was transferred from the collection of the Consortium for Functional Glycomics. | ||
| 006084 | B6.129P2(Cg)-Foxg1tm1(cre)Skm/J | Repository- Live |
| This strain expresses Cre recombinase from the endogenous Foxg1 locus. Forkhead box G1 is required for telencephalon development and is expressed specifically in the telencephalon and discrete head structures. When crossed with a strain containing loxP site flanked sequence of interest, Cre-mediated recombination results in tissue-specific deletion of the target. Recombination occurs in the telencephalon, anterior optic vesicle (developing lens and retina), otic vesicle, facial and head ectoderm, olfactory epithelium, mid-hindbrain junction and pharyngeal pouches. Mice that are homozygous for the targeted mutation die perinatally. Heterozygous mutant mice are viable, fertile, normal in size. On the C57BL/6 background, forebrain volume in heterozygotes is substantially reduced especially in the cerebral cortex (40.7%), striatum (29.7%), and hippocampus (18.6%). In the adult, the thalamus is reduced in volume by 21.6%. This mutant mouse strain represents a model that ma
..... For more information please see the full descriiption on the strain data sheet | ||
| 006600 | B6.129S1-Mnx1tm4(cre)Tmj/J | Repository- Live |
| Mice heterozygous for this HB9cre targeted mutation are viable and fertile, with cre expression replacing HB9 (Hlxb9 or Mnx1) expression. Under control of the endogenous upstream elements, cre expression is directed to motor neurons. In heterozygotes, cre expression coincides with HB9 expression. Homozygous HB9cre mice die at or soon after birth, with expression of Cre recombinase likewise directed to motor neurons but no expression of endogenous HB9. When these HB9cre mice are bred with mice containing a loxP-flanked sequence of interest, Cre-mediated recombination in the resulting offspring leads to deletion of the flanked sequences in Mnx1/HB9 expressing cells; making them useful in neurodevelopmental studies of homeobox genes, motor neuron function and differentiation, and the central nervous system. | ||
| 006471 | B6.Cg-Tg(HDexon1)61Gpb/J | Repository- Live |
| Mice have been generated that are transgenic for the 5' end of the human HD gene carrying (CAG)115-(CAG)150 repeat expansions. In this founder line (61Gpb), as well as another similar line (62Gpb, see Stock No. 006494), the transgene is ubiquitously expressed. Transgenic mice exhibit a progressive neurological phenotype that mimics many of the features of HD, including choreiform-like movements, involuntary stereotypic movements, tremor, and epileptic seizures, as well as nonmovement disorder components, including unusual vocalization. They urinate frequently and exhibit loss of body weight and muscle bulk through the course of the disease. Neurologically they develop Neuronal Intranuclear Inclusions (NII) which contain both the huntingtin and ubiquitin proteins. These NII have also been identified in human HD patients. The age of onset of HD symptoms is reported to occur between 15 and 21 weeks for this 61Gpb line. These HDexon1
..... For more information please see the full descriiption on the strain data sheet | ||
| 002711 | B6;129-Gabrb3tm1Geh/J | Repository- Live |
| The gamma-Aminobutyric acid type A receptors mediate the majority of rapid inhibitory synaptic transmission in the CNS. The beta3 subunit is an essential component of these receptors in many brain regions, especially during development, and is implicated in several pathophysiologic processes. The majority of mice homozygous for the Gabrb3tm1Geh mutation (or beta3-/-) die at birth with ~60% displaying cleft palate and the remaining ~35% die for unidentified reasons. Homozygous females that survive are fertile but do not care for their pups. Survivors have frequent myoclonus and occasional epileptic seizures, are hypersensitive to external stimuli and handling, have a lack of coordination and display altered responses to certain anesthesias. In addition, the observed behavioral deficits (especially regarding social behaviors) indicate that mutant mice may be a useful model of autism spectrum disorders. Of note, several strains bearing gamma-aminobutyric acid (GABA-A)
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| 006251 | B6;129-Tor1atm1Wtd/J | Repository- Live |
| Homozygous mutant mice have a perinatal lethal phenotype. They fail to feed or vocalize at birth, and typically die within 48 hours. No protein is detected by immunoblot analysis in tissues (liver, brain, spinal cord, mouse embryonic fibroblasts (MEFs)) from homozygous mutant animals. Microscopic and ultrastructural examination of central nervous system neurons from embryonic day 18 homozygous embryos reveals abnormalities including dysmorphic ventral horn neuron nuclei, vesicles in the neuronal nuclear envelope and enlarged endoplasmic reticulum. Neurons within homozygotes appear normal when migrating, but develop nuclear membrane abnormalities upon maturation.
In contrast to homozygous mutant mice, heterozygotes are viable, fertile, normal in size, and do not manifest any gross physical or behavioral abnormalities. Torsin A (TOR1A) protein levels in heterozygous mice are approximately 50% of wildtype levels. This mutant mouse strain may be useful in studies of torsion dystonia 1
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| 003627 | B6C3-Tg(HD82Gln)81Dbo/J | Repository- Live |
| Mice expressing this transgene appear normal at birth through 1-2 months. Mice fail to gain weight, develop tremors, hypokinesis and lack coordination. They exhibit an abnormal gait and frequent hind limb clasping. Life expectancy is 5-6 months. Studies using huntingtin antibodies indicated numerous immunoreactive nuclear inclusions in multiple neuron populations. Neuritic damage is evident. | ||
| 000391 | B6EiC3Sn a/A-Pax6Sey-Dey/J | Repository- Live |
| Mice homozygous for the spontaneous semidominant Dickie's small eye mutation(Pax6Sey-Dey) die during embryogenesis. Heterozygous mutant mice are characterized by an overall small body size, small eyes with coloboma, small or lacking lens with cataract, abnormal folding of the retina and reduction of the pigment layer. The anterior chamber is usually missing. Mutations in the Pax6 gene lead to an impairment of axonal growth and differentiation, and delay migration of preneuronal cells. Optic nerve cross-sectional area and fiber count are decreased in these mutant mice, but probably indirectly as a consequence of reduced neural retina size. Formation of lens and of nasal cavity placodes are dependent on normal Pax6 expression. | ||
| 004780 | C3H/HeJ-agil/J | Repository- Live |
| Mice homozygous for this recessive mutation are recognized by 15 days of age by their shaky, unsteady, wobbly gait. Mutants die around three weeks of age. The agitans-like mutation maps to Chromosome 14 between D14Mit39 and D14Mit115 which are near the neurological mouse mutation agitans (ag). The agitans mutants exhibit a similar phenotype. | ||
| 000516 | C57BLKS-Rpl24Bst/J | Repository- Live |
| Belly spot and tail (Rpl24Bst) is a semidominant, homozygous in utero lethal mutation. Adult heterozygotes are viable and fertile although a reduced birth rate for heterozygotes has been reported. This may reflect incomplete penetrance, or, more likely, prenatal mortality. The Rpl24Bst mutation has variable expressivity and the heterozygous phenotypic traits include shortened and kinked tail, white feet and belly spot, malocclusion, smaller body size, exencephaly, abnormalities of the spine, ocular defects, and polydactyly. Polydactyly is found predominantly in the right rear paw, occasionally in the left front paw and rarely in the left rear or right front paws. Approximately 50-60% of the heterozygotes have a reduction in pupillary light reflex in one or both eyes due to an underlying optic nerve atrophy. Ontological studies showed a delay in the developmental fusion of the optic fissure, a disruption of the retinal layers by embryonic day 1
..... For more information please see the full descriiption on the strain data sheet | ||
| 007578 | CBy.Cg-Tg(HDexon1)61Gpb/J | Repository- Live |
| Mice have been generated that are transgenic for the 5' end of the human HD gene carrying approximately 100 CAG repeat expansions. In this founder line (61Gpb), the transgene is ubiquitously expressed. Transgenic mice exhibit a progressive neurological phenotype that mimics many of the features of HD, including choreiform-like movements, involuntary stereotypic movements, tremor, and epileptic seizures, as well as nonmovement disorder components, including unusual vocalization. They urinate frequently and exhibit loss of body weight and muscle bulk through the course of the disease. Neurologically they develop Neuronal Intranuclear Inclusions (NII) which contain both the huntingtin and ubiquitin proteins. These NII have also been identified in human HD patients. The age of onset of HD symptoms is reported to occur between 15 and 21 weeks for this 61Gpb line. On the BALB/cByJ genetic background, the CAG tract remains somatically stable throughout the life span of the mouse but may contr
..... For more information please see the full descriiption on the strain data sheet | ||
| 004938 | FVB-Tg(YAC128)53Hay/J | Repository- Live |
| These transgenic mice express the human huntingtin protein containing a 128 CAG repeat expansion. Human huntingtin mRNA and protein is detected. Hyperkinesis begins at 3 months of age with progressive motor impairment appearing at 6 months of age. This is followed by progressive neurodegeneration, starting at 9 months of age, and hypokinesis at 12 months. The motor dysfunction, Rotorod deficit, is correlated with neuronal loss. Mutants exhibit decreased brain weight and reduced striatal and cortical volumes. 18% shrinkage of striatal neurons is observed in 12 month old mutants. A significant decrease (15%) in the number of striatal neurons occurs by 12 months of age. Nuclear huntingtin aggregate inclusions of striatal neurons from 18 month old mutant mice are detected at the light microscopy level. This mutant mouse strain represents a model that may be useful in studies of Huntington's disease. | ||
| 008315 | FVB.129P2(Cg)-Hlxtm1Rph/J | Repository- Live |
| Homozygous null mice have an embryonic lethal phenotype. Homozygous mice on the C57BL/6 and B6;129 mixed background fail to develop past embryonic days 15.5 due to impaired fetal hematopoiesis (anemia, hypoplastic and abnormal development of the liver, hypoplastic gut). Homozygous mice on the FVB/N background survive through embryonic day 18.5 and dead homozygote newborn pups are observed. Late gestation homozygous embryos on the FVB/N background are smaller than wildtype littermates, pale, hydropic (subcutaneous fluid ballooning skin), and have impaired neural crest cell and enteric neuron migration from the stomach to intestine. Mice that are heterozygous for the targeted mutation are viable, fertile, normal in size and do not display any gross physical or behavioral abnormalities. Naive CD4 T cells from heterozygotes exhibit increased responsiveness to IL-4, resulting in differentiation of more Th2 cells. This mutant mouse strain may be useful in studies of liver and gastrointe
..... For more information please see the full descriiption on the strain data sheet | ||
| 004828 | FVB.129P2-Pde6b+ Tyrc-ch/AntJ | Repository- Live |
| These mice are homozygous for the 129P2/OlaHsd wildtype Pde6b allele and do not suffer from blindness due to retinal degeneration. Mice from the colony of FVB.129P2-Fmr1tm1Cgr/J, Stock No. 004624, that no longer carried the mutant allele for Fmr1 were used to establish this line. Mice are pigmented as a result of the homozygosity of the Tyrc-ch allele. This mutant mouse strain may be useful in studies where a sighted mouse on the FVB background is an appropriate control, such as behavioral studies. This strain serves as the control for the FVB.129P2-Fmr1tm1Cgr/J strain, Stock No. 004624 . | ||
| 008343 | FVB.Cg-Hydinhy3/MlrJ | Repository- Live |
| Mice homozygous for the hydrocephalus 3 spontaneous mutation of the hydrocephalus inducing gene (Hydinhy3) are usually identifiable at three to five days. Those with frank hydrocephalus develop hydrocephalus with early perinatal onset, and most animals die by three to five weeks of age. Penetrance is incomplete. Hydrocephalus is associated with a central pair defect impairing ciliary motility and fluid transport in the brain. Hydin-deficiency also impairs
the beat pattern of ependymal and tracheal cilia. These Hydinhy3 mutant mice may be useful in neurological and developmental studies.
In an attempt to offer alleles on well-characterized or multiple genetic backgrounds, alleles are frequently moved to a genetic background different from that on which an allele was first characterized. It should be noted that the phenotype could vary from that originally described. We will modify the strain description if necessary as published results become
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| 006297 | FVB.Cg-Tg(Eno2-cre)39Jme/J | Repository- Live |
| Mice hemizygous for this NSE39-Cre transgene are viable, fertile, normal in size, and do not display any gross physical or behavioral abnormalities. These NSE39-Cre mice harbor a transgenic insert consisting of the Cre recombinase gene under the control of the promoter region of the rat neuron specific enolase (NSE or Eno2) gene. As such, Cre recombinase activity is directed to neurons with expression in many tissue types. When bred with mice containing a loxP-flanked sequence of interest, Cre-mediated recombination will result in deletion of the flanked genome. Specifically, these NSE39-Cre transgenic mice may also be useful in studies of spinal muscular atrophy (SMA) along with mice harboring a conditional (floxed) Smn1 gene (see Stock No. 006138 or Stock No. 006146).
Additional SMA strains expressing cre in striated muscle are available
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| 005024 | FVB.Cg-Tg(SMN2)89Ahmb Smn1tm1Msd/J | Repository- Live |
| Mice that are homozygous for the targeted mutant Smn1 allele and carry the SMN2 transgene exhibit symptoms and neuropathology similar to patients afflicted with type I proximal spinal muscular atrophy (SMA). In the initial characterization by the donating investigator, mice were either stillborn or survived 4-6 days. Mice that died at or shortly after birth were slightly smaller (1.33 g. vs. 1.51 g.) than normal littermates. Mice that survive for several days are indistinguishable from normal littermates in the first 48 hours, after which they exhibit decreased suckling and movement, labored breathing and tremoring limbs. Mice succumbing at this later time point are noticeably smaller than normal littermates (1.47 g vs. 4.59). A bell-shaped trunk is also noticeable in affected mice, presumably from intercostal muscle weakness, a characteristic of type I SMA. Histological analysis indicates that affected mice that survive to day 5 exhibit a loss of motor neurons from spina
..... For more information please see the full descriiption on the strain data sheet | ||
| 007247 | FVB/N-Tg(YAC353G6)W7Hay/J | Repository- Live |
| These transgenic mice express the human huntingtin protein containing a 133 CAG repeat expansion and a mutation in exon 13 conferring resistance to caspase-6 cleavage to the gene product.
Expected caspase-6 cleaved fragments are not detected in brain lysates by Western blot analysis. Transgenic mice have brain weight and striatal volume similar to wildtype controls and do not exhibit neuronal loss at 12 months of age when compared to transgenic mice that express human huntingtin protein containing a 128 CAG repeat (FVB-Tg(YAC128)53Hay/J Stock No. 004938). These transgenic mice have activity levels and motor function similar to wildtype controls, and are resistant to neuron excitotoxicity. Immunohistochemical analysis of striatal brain sections reveals delayed nuclear localization of mutant huntingtin protein in these transgenic mice at nine months of age. Between nine and 12 months of age, an increase of nuclear huntingtin is observed. Homozygotes are viable, fertile, normal in
..... For more information please see the full descriiption on the strain data sheet | ||
| 000674 | I/LnJ | Repository- Live |
| I/LnJ mice were originally derived by Dr. LC Strong in 1926 from an unpedigreed stock of mice. A high proportion of mice from this strain lack a corpus callosum. This absence is associated with slow growth of the medial septum subadjacent to the cavum septi. The reproductive performance of I/LnJ mice is very poor. Further analysis indicates that oocytes from I/LnJ mice display retarded kinetics of meiotic maturation and a high frequency of metaphase I arrest. Some oocytes fail to resume meiosis. Oocytes have many very small centrosomes with an absence of microtubules. I/LnJ mice, in addition to carrying several other coat color alleles, are homozygous for the piebald mutation (Ednrbs). The piebald spontaneous mutation is the result of a mutation in the endothelin receptor type B gene, Ednrb. Mice show irregular white spotting, the amount of which is greatly influenced by minor modifying genes. They also have dark eyes. The white areas of the coat are complet
..... For more information please see the full descriiption on the strain data sheet | ||
| 003925 | MRL.129P2(B6)-B2mtm1Unc/Dcr-Dab1scm-2J/J | Repository- Live |
| See Stock No. 000486 for important information on the MRL/MpJ background. | ||
| 002043 | STOCK A/A-Dab1scm/J | Repository- Live |
| Mice homozygous for the scrambler spontaneous mutation (Dab1scm) are recognized by an unstable gait and whole-body tremor. The cerebella of 30-day-old scrambler homozygotes are hypoplastic and devoid of folia; however, neither seizures nor abnormal brain wave patterns have been observed. Scrambler is similar to the reeler mutation in phenotype and pathology and, like reeler, probably results from defective neuronal migration. Female homozygotes mate and breed. Homozygous scrambler mutants have an ataxic gait which in the male may be contributory factor in the failure to mate. Normal life span for both sexes. | ||
| 002979 | STOCK Apaf1fog/J | Repository- Live |
| Mice homozygous for the forebrain overgrowth recessive spontaneous mutation (fog) display forebrain, lumbo-sacral, and facial defects most likely due to excessive growth or cellular proliferation ultimately causing abnormalities in neural tube closure. The phenotypes manifest as head bumps and sacral spina bifida and individual mice can have either or both. Three unique features of the mutant are (1) the growth of telencephalon cells into the surrounding mesenchyme, (2) presence of an encephalocele through the midline cleft in some mutants, and (3) dissociation of the tail defect from the caudal neural tube defect. The fog mutation maps to mouse Chromosome 10 near D10Mit262 and D10Mit230. | ||
| 005992 | STOCK Efna2tm1Jgf Efna5tm1Ddmo/J | Repository- Live |
| Mice homozygous for both targeted mutations are viable, fertile, and normal in size. 10-20% of females homozygous at both loci neglect their litters. Double homozygous mice have no endogenous protein expression in inferior colliculus (IC) or superior colliculus (SC), and thus lack the concentration gradient created by the endogenous proteins across the midbrain in wildtype mice. Temporal and nasal retinal axon termination is severely altered: multiple ectopic aborizations in the SC indicate abnormalities in both anteroposterior and dorsoventral topography. Following surgical ablation of portions of the midbrain (including IC and SC), cross-modal innervation by retinal neurons is greater in double homozygous mutants compared to wildtype. Mice heterozygous at both loci have greater reproductive performance compared to homozygotes. Further, double heterozygotes have temporal (but not nasal) retinal axon aborization in the SC with diminished frequency and severity. These ephrin A2/ephrin A
..... For more information please see the full descriiption on the strain data sheet | ||
| 005938 | STOCK Tg(Eno2-cre)39Jme/J | Repository- Live |
| Mice hemizygous for this NSE39-Cre transgene are viable, fertile, normal in size, and do not display any gross physical or behavioral abnormalities. These NSE39-Cre mice harbor a transgenic insert consisting of the cre recombinase gene under the control of the promoter region of the rat neuron specific enolase (NSE or Eno2) gene. As such, Cre recombinase activity is directed to neurons with expression in many tissue types. When bred with mice containing a loxP-flanked sequence of interest, Cre-mediated recombination will result in deletion of the flanked genome.
Specifically, these NSE39-Cre transgenic mice may also be useful in studies of spinal muscular atrophy (SMA) along with mice harboring a conditional (floxed) Smn1 gene (see Stock No. 006138 or Stock No. 006146).
Additional SMA strains expressing cre in striated muscle are av
..... For more information please see the full descriiption on the strain data sheet | ||
| 005040 | STOCK Tg(Pfkl)224Yg/J-Dll3pu-J/J | Repository- Live |
| This recessive remutation to Dll3pu results in mice with shortened vertebral spines, splayed ribs, and kinked tails. Common clinical characteristics include compression of the cervical, thoracic and lumbar vertebrae plus extreme variability in size, shape, and irregular fusion of tail vertebrae. | ||
| 005987 | 129-Achetm1Loc/J | Repository-Cryopreserved |
| Homozygous mice have 25% fetal mortality. Those born have retarded growth, fine motor tremors, unusual posture and gait, no righting reflex, malformed pinna, and sealed eyelids. These mice die emaciated and dehydrated by 3 weeks of age. Enriched diets for the nursing female and pups allow homozygous mice to survive to adulthood. Males exhibit no breeding behavior. Homozygous females can become pregnant when bred to heterozygous or wildtype males, but both female and pups do not survive. Acetylcholinesterase (AChE) activity is completely abrogated in serum and tissue from homozygous mice, and approximately half in heterozygotes. Many symptoms of organophosphate poisoning are observed in homozygous mice, including pulsating paws, body tremor, abnormal gait, pinpoint pupils, muscle weakness, and early death following seizure. When restrained, a white mucus forms on the eyes and seizures may occur. Mice also have several developmental delays, low body mass, decreased pain response, sexual
..... For more information please see the full descriiption on the strain data sheet | ||
| 002516 | 129-Edn3tm1Ywa/J | Repository-Cryopreserved |
| This mutation is alleleic with the lethal spotting spontaneous mutation. Homozygous mice are viable at birth, but most die within about a month. They show a disruption in neural crest lineage development. They die from peritonitis subsequent to aganglionic megacolon. They may serve as a model for human Hirschsprung's disease. | ||
| 003383 | 129S-Nogtm1Amc/J | Repository-Cryopreserved |
| Homozygous mice are born but die shortly after birth, exhibiting multiple defects, including an open neural tube, skeletal abnormalities, shortened body axis, and a small vestigial tail. Analysis of early gene expression has shown that the loss of Nog expression in the floorplate, notochord, and roofplate results in a progressive failure of ventral development in the CNS and somites. Nog is also expressed in condensing cartilage in the limb and in the sclerotome of somites so its loss results in defects in cartilage patterning and skeletal morphogenesis. Heterozygous embryos show lacZ reporter expression in pattern consistent with the endogenous gene. | ||
| 003082 | 129S1/SvImJ-Bcl2tm1Mpin/J | Repository-Cryopreserved |
| Heterozygous mice exhibit expression of beta-galactosidase in populations of large sensory neurons. Mice homozygous for the Bcl2tm1Mpin targeted mutation do not produce either the a or b form of the Bcl2 protein. Bcl2 is a major regulator of programmed cell death, a critical process in shaping the developing nervous system. The absence of the Bcl2 does not significantly influence the development of motor neurons before or during the main period of physiological cell death. Rather, Bcl2 exerts its influence beyond this period, subsequent to the phase where the majority of neuronal loss normally takes place. Polycystic kidney disease is less severe in this strain compared to the Bcl2tm1Sjk targeted mutation (Stock No. 002265). | ||
| 000091 | 129T1/Sv-Oca2+ Tyrc-ch Dnd1Ter/J | Repository-Cryopreserved |
| 001279 | 129T1/Sv-Oca2+ Tyrc-ch-Aft/J | Repository-Cryopreserved |
| Aft is a dominant mutation that causes increased postnatal lethality in heterozygotes and nearly 100% embryonic or perinatal lethality in homozygotes. Aft/+ mice can be identified by tail kinks near the tail tip and syndactyly of the third and fourth digits of the hind feet, a trait which is often unilateral. This syndactyly does not result from bone fusion, but rather from the persistence of the skin web that normally is removed via apoptosis during development. The tail kinks appear to result from cartilage overgrowth and fusion. Alopecia is found at six to eight months of age and can progress into bleeding ulcerations. Histology of Aft/+ skin shows fewer follicles, fibrosis, and an increase in the number of mast cells. The penetrance of this mutation is only approximately 65% on the 129/Sv and C57BL/6J backgrounds and the expressivity is variable. The most prevalent trait in Aft/+ mice is tail kinks, followed by syndactyly then skin lesions. The
..... For more information please see the full descriiption on the strain data sheet | ||
| 000577 | B6 x STOCK a Oca2p Hps5ru2 Ednrbs/J | Repository-Cryopreserved |
| 005245 | B6.129(C)-Nrp1tm1Ddg/J | Repository-Cryopreserved |
| Mice that are homozygous for the targeted mutation are viable, but experience fertility problems. Homozygous mice have increased incidence of postnatal lethality by 7 days of age. Mutant mice express normal levels of gene product of the variant protein that does not bind semaphorins and retains binding ability for VEGF. Homozygotes display axon guidance defects with little or no binding activity of semaphorin 3A or 3C to axons in the dorsal root entry zone. Cultured neurons isolated from mutant mice do not respond to semaphorin3A. Cranial and spinal neurons from E11.5 and E12.5 embryos are disorganized, defasciculated and have abnormal errant projections. This mutant mouse strain may be useful in studies of neural development and axonal guidance. | ||
| 005247 | B6.129(SJL)-Nrp1tm2Ddg/J | Repository-Cryopreserved |
| These mice possess loxP sites on either side of exon 2 of the targeted gene. Mice that are homozygous for this allele are viable, fertile, normal in size and do not display any gross physical or behavioral abnormalities. When used in conjunction with a Cre recombinase-expressing strain, this strain is useful in generating tissue-specific mutants of the floxed allele. | ||
| 002991 | B6.129-Ascl1tm1And/J | Repository-Cryopreserved |
| Mice homozygous for the Ascl1tm1And targeted mutation die within 24 hours after birth. There are no gross external defects; However, mutant mice do have extensive loss of sympathetic ganglia and olefactory epithelium. | ||
| 002957 | B6.129-Dll1tm1Gos/J | Repository-Cryopreserved |
| Mouse embyros homozygous for the Dll1tm1Gos targeted mutation establish a primary metameric pattern in the mesoderm. Cytodifferentiation appears normal, but the segments have no cranio-caudal polarity, and no epithelial somites form. Caudal sclerotome halves do not condense, and the pattern of spinal ganglia and nerves is perturbed, indicating loss of segment polarity. Myoblasts span segment borders, demonstrating that these borders are not maintained. | ||
| 005697 | B6.129-Otx1tm4(cre)Asim/J | Repository-Cryopreserved |
| This strain expresses Cre recombinase from the targeted locus. Mice that are heterozygous for the targeted mutation are viable, fertile, normal in size and do not display any gross physical or behavioral abnormalities. Homozygotes have a perinatal lethal phenotype. Expression of the Cre recombinase gene (mRNA) under the control of the endogenous gene promoter, is detected in the lateral midbrain of embryonic day 10.5 aged embryos and in the presumptive alar-basal plate boundary of embryonic day 12.5 aged embryos, closely mimicking the endogenous gene expression pattern. When crossed with a strain containing loxP site flanked sequence of interest, Cre-mediated recombination results in tissue-specific deletion of the target. Recombination is first detected at embryonic day 8.7. This strain represents an effective tool for generating tissue specific-targeted mutants that would be useful to study developmentally critical gene function in the brain. | ||
| 004193 | B6.129-Psen1tm1Mpm/J | Repository-Cryopreserved |
| The targeted allele (PS1M146VKI) causes a mutation of the mouse Psen1 gene that results in expression of a presenilin-1 protein with the human familial Alzheimer's disease-linked mutation PS1M146V. The neo cassette was deleted from the targeted allele (using a CMV-Cre transgenic line of mice). Published findings indicate that this alteration should not influence the level of expression of mutant PS1. Northern blot analysis and RT-PCR determined mRNA expression of the targeted mutant allele is normal. Homozygous PS1M146VKI mice produce only the mutant gene product. Mice that express this targeted allele are viable, fertile, normal in size and do not display any gross physical or behavioral abnormalities. Neurodegeneration seen in wild-type mice caused by excitotoxin kainate treatment is increased and accelerated in this mutant strain. Cultured cells expressing the mutant protein exhibit perturbed neuronal calcium homeostasis. This mutant mouse strain represents a model that may b
..... For more information please see the full descriiption on the strain data sheet | ||
| 003615 | B6.129-Psen1tm1Shn/J | Repository-Cryopreserved |
| Presenilin-1 is the major gene responsible for early-onset familial Alzheimer's disease. Mice that are homozygous null for this gene die within minutes after being born. Externally, mice exhibit shortened tails that curve to the right, thickened necks, loose skin and hind limbs that curve towards the midline. Their weight is 15-20% that of wildtype. Gross skeletal malformations and central nervous system abnormalities are observed. Death presumably results from impaired respiratory mechanics due to ribcage deformities. Histological examination indicates that alveoli are marginally expanded. By embryonic day 9.5, there is a drastic reduction in neural progenitor cells. Later, the brain exhibits hemorrhages and symmetric cerebral cavitation. Cavitation occurs primarily in the ventrolateral region of the ventricular zone in the posterior portion of the brain. | ||
| 002405 | B6.129P2-Ncam1tm1Cgn/J | Repository-Cryopreserved |
| Mice homozygous for the Ncam1tm1Cgn targeted mutation show a 10% reduction in overall brain weight and 36% reduction in olfactory bulb size. Motor end plates were 14% smaller in NCAM-deficient mice compared to controls, and the formation of junctional folds was delayed. They also show deficits in spatial learning and in the amount of protein-bound alpha-(2,8)-linked polysialic acid. Both homozygous and heterozygous mutant mice are reportedly more aggressive than wildtype controls. | ||
| 004751 | B6.129P2-Ugt8atm1Pop/J | Repository-Cryopreserved |
| Mice that are homozygous for the targeted mutation have a postnatal lethal phenotype and most do not survive past postnatal day 21 to 28. Surviving homozygotes do not live past 100 days of age. Homozygous female mice are fertile but unable to care for pups. Homozygous male mice are infertile. No gene product (mRNA) is detected by Northern blot analysis of brain tissue from homozygote animals. Mice that are homozygous for the mutation are smaller in size than wildtype and heterozygous littermates. Beginning at 12-14 days of age, homozygotes develop mild ataxia, head jerking movements, and tremors that become more noticeable by 16-20 days of age. The abnormal neurological phenotype is progressive; by 60 days of age many mutants exhibit complete hindlimb paralysis and difficulty breathing. Homozygotes do not synthesize galactolipid galactocerebroside, heterozygotes exhibit reduced levels. Although myelin synthesis and myelin sheath (compact myelin) formation is mostly unaltered in homozyg
..... For more information please see the full descriiption on the strain data sheet | ||
| 004276 | B6.129S-Figntm1Frk | Repository-Cryopreserved |
| 003114 | B6.129S2-Crhtm1Maj/J | Repository-Cryopreserved |
| Mice homozygous for the Crhtm1Maj targeted mutation are viable and fertile. Pups born to homozygous mothers must be supplemented with corticosterone in the drinking water from day 12 of gestation until weaning. Homozygous mice have reduced adrenocortical secretion following stress. They may be susceptible to complications from hypoglycemia when fasting. Heterozygous mice are phenotypically indistinguishable from normal wildtype siblings. | ||
| 003343 | B6.129S2-En1tm1Alj/J | Repository-Cryopreserved |
| Mice homozygous for the En1tm1Alj targeted mutation die shortly after birth. They are missing the third and fourth cranial nerves as well as most of the colliculi and cerebellum. The brain phenotype can be less severe depending on the genetic background. There is also a disruption of the dorsal/ventral patterning of the limb paws, a disrupted sterum, and truncation of the 13th ribs. Deletion of mid-hindbrain tissue may be seen as early as embryonic day 9.5. | ||
| 003865 | B6.129S2-Itgavtm1Hyn/J | Repository-Cryopreserved |
| The majority (80%) of homozygous null Itgav mice die during embryonic days 9.5-11.5. These mice are characterized by pericardial edema and retarded growth probably due to placental defects. Mice surviving this period die at birth exhibiting intracranial and intestinal hemorrhaging. Angiogenesis in other tissues is normal. Cleft palate is also observed. | ||
| 003596 | B6.129S4-Cdk5tm1Kul/J | Repository-Cryopreserved |
| Cdk5 is an important molecule for brain development and neuronal differentiation. Cdk null mice exhibit unique lesions in the central nervous system associated with perinatal mortality. The brains of mutant mice lack cortical laminar structure and cerebellar foliation. The large neurons in the brain stem and in the spinal cord show chromatolytic changes with accumulation of neurofilament immunoreactivity. They also exhibit neuronal migration abnormalities, cerebellar defoliation, NF accumulation neuronal bodies, and degenerated motor neurons. In an attempt to offer alleles on well-characterized or multiple genetic backgrounds, alleles are frequently moved to a genetic background different from that on which an allele was first characterized. This is the case for the strain above. It should be noted that the phenotype could vary from that originally described. We will modify the strain description if necessary as published results become available. | ||
| 003754 | B6.129S4-Shroom3Gt(ROSA)53Sor/J | Repository-Cryopreserved |
| Mice that are homozygous for this mutation survive to term or die very shortly after birth. The gene trap insertion appears to have occurred between the translational start sites of the long and short forms in the 5' portion of the endogenous gene. No gene product (protein or mRNA) is detected in homozygous embryos. Mutant embryos can be distinguished by E9.25 as the lateral edges of the cranial neural folds exhibit a wavy appearance and fail to converge at the dorsal midline. As the embryo develops, the neural folds continue to enlarge and develop away from the dorsal midline, presenting a mushroom-like appearance. By day E14.5, failed neural tube closure results in exencephaly, acrania, and facial clefting. Some mutants exhibit defects in ventral closure resulting in herniation of the intestine and liver. Not all aspects of the phenotype are fully penetrant. Hemizygous mice express a B-galactosidase under the control of the endogenous promoter, with expression variously observed
..... For more information please see the full descriiption on the strain data sheet | ||
| 002646 | B6.129S6-Nf1tm1Fcr/J | Repository-Cryopreserved |
| Mice homozygous for the Nf1tm1Fcr targeted mutation die during embryonic development due to severe heart malformation (~E13). They also show hyperplasia of neural crest-derived sympathetic ganglia. Heterozygotes do not exhibit any overt disease symptoms. However, as noted in a another targeted mutation deleting the same exon of the Nf1 gene (Jacks, et al., Nat Genetics 7:353-361, 1994), they do show a predisposition to many types of tumors and were recently shown to have deficits in learning and memory (Silva, et al., Nat Genetics 15:281-284, 1997). | ||
| 005970 | B6.129S7-Atoh1tm2Hzo/J | Repository-Cryopreserved |
| Mice that are heterozygous for the targeted mutation are viable, fertile, normal in size and do not display any gross physical or behavioral abnormalities. Homozygous mutant mice have a perinatal lethal phenotype and die shortly after birth. No gene product (protein) is detected in resting chondrocytes by immunohistochemical analysis of embryonic age 18.5 homozygotes. Beta-galactosidase X-gal staining of neural tissue from embryonic day 14.5 and newborn (postnatal day 0) aged homozygous and heterozygous mice mimicks the endogenous expression pattern. Mice homozygous for this mutation exhibit a phenotype similar to the phenotype observed in mice homozygous for the null (loss of function) targeted mutation. Homozygotes lack cerebellar granule neurons, cochlear and ventricular hair cells, and the pontine nuclei in the brain stem. This mutant mouse strain may be useful in studies of brain and inner ear development. | ||
| 003312 | B6.129S7-Ngftm1Gne/J | Repository-Cryopreserved |
| Mice homozygous for the disrupted Ngfb gene are born alive, but are smaller, on average, than wild type or heterozygous individuals. They fail to thrive and have a life span of 4 weeks or less, often dying within the first three days of life. Mutant mice are developmentally delayed and exhibit severe cell loss in sympathetic ganglia. They exhibit a more selective cell loss in sensory ganglia, revealing a reduced number of small cells in the dorsal root ganglia (DRG) at 3 days of age, while large cell numbers in the DRG are comparable to wild type mice. Mutant mice also display a decreased responsiveness to pain in comparison to +/+ or +/- littermates. During the first month of life, survival of cholinergic neurons in the basal forebrain does not appear to be affected by absence of NGF, as these cells were observed to differentiate and maintain their phenotype throughout the life span of homozygous mutant mice. Mice heterozygous for the Ngfb gene disruption exhibit normal
..... For more information please see the full descriiption on the strain data sheet | ||
| 004275 | B6.Cg-Fignfi/Frk | Repository-Cryopreserved |
| 000104 | B6.Cg-Tyrc-h/J | Repository-Cryopreserved |
| 000518 | B6.Cg-Usp14ax-J/J | Repository-Cryopreserved |
| The first outward sign of homozygosity for the recessive mutation Usp14ax-J is an unsteady gait, particularly in the hind quarters, that can be detected by approximately 2 weeks of age. These pups often show difficulty in righting themselves when turned on their backs. They have a rapid tremor that is most apparent when they are active. Extensor paralysis progresses and wasting of the hind quarters ensues until the hind quarters are not functional and the mouse can not sit upright or move except through the use of onlyits front limbs. Although death is premature, viability in the first two to three weeks is not diminished. At 18 days of age these mutants weigh an average of 15% less than wildtype controls and by 45 days this difference is increased such that they weigh 50-60% less than wildtype controls. Homozygotes do not breed. The lumbar vertebrae are slightly shorter than normal with shorter spinous processes and more elongate foramen. These homozygotes have defec
..... For more information please see the full descriiption on the strain data sheet | ||
| 006663 | B6.Cg-Tg(Eno2-cre)39Jme/J | Repository-Cryopreserved |
| Mice hemizygous for this NSE39-Cre transgene are viable, fertile, normal in size, and do not display any gross physical or behavioral abnormalities. These NSE39-Cre mice harbor a transgenic insert consisting of the cre recombinase gene under the control of the promoter region of the rat neuron specific enolase (NSE or Eno2) gene. As such, Cre recombinase activity is directed to neurons with expression in many tissue types. When bred with mice containing a loxP-flanked sequence of interest, Cre-mediated recombination will result in deletion of the flanked genome.
Specifically, these NSE39-Cre transgenic mice may also be useful in studies of spinal muscular atrophy (SMA) along with mice harboring a conditional (floxed) Smn1 gene (see Stock No. 006138 or Stock No. 006146).
Additional SMA strains expressing cre in striated muscle are av
..... For more information please see the full descriiption on the strain data sheet | ||
| 001271 | B6.RBF-Nek1kat/J | Repository-Cryopreserved |
| The phenotype associated with the Nek1kat-2J allele is more severe than that of the Nek1kat allele. Mice homozygous for Nek1kat-2J all die before one year of age, a third of those that survive weaning die suddenly before 100 days of age, and the reported median survival age is 211 days. Mice homozygous for Nek1kat also have a shortened life expectancy with high pre-weaning mortality and a reported median survival of 286 days, but 22% were found to survive beyond 1 year. Both mutants are runted and have blunted noses with olfactory bulbs that are approximately half the normal size and lack most of the glomerular and external granular layers. In the brain there is dilation of the lateral and third ventricles, cerebral aqueduct and fourth ventricle along with large, fluid-filled cysts in the choroid plexus. Hydrocephalus occurs. Normochromic normocytic anemia is found and is more pronounced in Nek1Kat-2J
..... For more information please see the full descriiption on the strain data sheet | ||
| 003536 | B6;129-Cdk5tm1Kul/J | Repository-Cryopreserved |
| Cdk5 is an important molecule for brain development and neuronal differentiation. Cdk null mice exhibit unique lesions in the central nervous system associated with perinatal mortality. The brains of mutant mice lack cortical laminar structure and cerebellar foliation. The large neurons in the brain stem and in the spinal cord show chromatolytic changes with accumulation of neurofilament immunoreactivity. They also exhibit neuronal migration abnormalities, cerebellar defoliation, NF accumulation neuronal bodies, and degenerated motor neurons. | ||
| 002784 | B6;129-Dhhtm1Amc/J | Repository-Cryopreserved |
| Mice that are homozygous for the targeted mutation are viable, normal in size and do not display any gross physical or behavioral abnormalities. Homozygous male mice are sterile due to arrested spermatogenesis at the late meiosis, primary spermatocyte stage. Female homozygotes are fertile. No gene product (mRNA) was detectable by semiquantitative RT-PCR analysis of peripheral nerve. Embryonic testis development is impaired. By six weeks of age, the mass of testes from homozygous males is 90% smaller than testes from heterozygous males. Histological examination reveals a diminished number of germ cells and no mature sperm in the testis or epididymis. Peripheral nerves from mutant mice appear flattened with structurally disorganized protective sheaths. The perineural cells, glia and mesenchymal cells, develop defective tight junctions, causing the perineurium to be permeable. This mutant mouse strain may be useful in studies related to male sterility and regulation of peripheral nerve de
..... For more information please see the full descriiption on the strain data sheet | ||
| 008136 | B6;129-Nlgn1tm1Sud/J | Repository-Cryopreserved |
| Mice that are homozygous for the targeted mutation are viable, normal in size and do not display any gross physical abnormalities. No gene product (protein) is detected by Western blot analysis of brain extracts from homozygous animals. This mutant mouse strain may be useful in studies of synapse formation and/or function. | ||
| 008139 | B6;129-Nlgn2tm1Sud/J | Repository-Cryopreserved |
| Mice that are homozygous for the targeted mutation are viable, normal in size and do not display any gross physical abnormalities. No gene product (protein) is detected by Western blot analysis of brain extracts from homozygous animals. This mutant mouse strain may be useful in studies of synapse formation and/or function. | ||
| 008394 | B6;129-Nlgn3tm2.1Sud/J | Repository-Cryopreserved |
| This targeted mutation strain carries a deletion of exons 2 and 3 of the gene. These mice show no alteration in their inhibitory synaptic transmission characteristics. No protein product is detected by Western blot analysis of homozygous brain extracts. Homozygotes are viable, normal in size and do not display any gross physical abnormalities. This mutant mouse strain may be useful in studies of synapse formation and/or function. | ||
| 003255 | B6;129-Plp1tm1Kan/J | Repository-Cryopreserved |
| The gene for myelin proteolipid protein (Plp) lies on the X chromosome. Mice homozygous or hemizygous for the Plptm1Kan targeted mutation are viable and fertile. Although they lack expression of the PLP protein, they show no sign of motor deficits, tremors or seizures, in contrast to most naturally occurring PLP mutants. PLP is a major membrane component of CNS myelin, and many PLP mutants show defects in myelin sheath formation. However, Plptm1Kan mice do not exhibit this dysmyelination. Some ultrastructural differences are observed in the myelin of Plptm1Kan mutant mice when compared to controls, including a less distinct difference between the major dense line (MDL) and the intraperiod line (IPL), which corresponds to reduced physical stability of the myelin sheath and suggests a function of PLP in maintenance of myelin architecture. Plptm1Kan mutant mice show no evidence of myelin breakdown with age. | ||
| 003822 | B6;129S-Psen1tm1Shn/J | Repository-Cryopreserved |
| Presenilin-1 is the major gene responsible for early-onset familial Alzheimer's disease. Mice that are homozygous null for this gene die within minutes after being born. Externally, mice exhibit shortened tails that curve to the right, thickened necks, loose skin and hind limbs that curve towards the midline. Their weight is 15-20% that of wildtype. Gross skeletal malformations and central nervous system abnormalities are observed. Death presumably results from impaired respiratory mechanics due to ribcage deformities. Histological examination indicates that alveoli are marginally expanded. By embryonic day 9.5, there is a drastic reduction in neural progenitor cells. Later, the brain exhibits hemorrhages and symmetric cerebral cavitation. Cavitation occurs primarily in the ventrolateral region of the ventricular zone in the posterior portion of the brain. | ||
| 004715 | B6;129S1-Wnt7atm1Amc/J | Repository-Cryopreserved |
| Mice that are homozygous for the targeted mutation are viable, but sterile. A truncated mRNA transcript is detected during embryogenesis. Homozygotes exhibit ventralization of dorsal limb mesoderm tissues. The variable phenotype includes thickening of dorsal limb dermus, loss of dorsal hair on digits and abnormal or missing posterior distal digits. Abnormalities are more severe distally than proximally. Homozygous female mice have functioning ovaries, but are sterile due to abnormal development of the oviduct and uterus. Although homozygous male mice have normal spermatogenesis, Mullerian ducts do not regress resulting in blocked sperm passage. Mutant mice have reduced synapsin I levels and delayed synaptogenesis between cerebellar granule cells and mossy fiber neurons. This mutant mouse strain may be useful in studies related to dorsal-ventral and anterior-posterior patterning and axonal remodeling. | ||
| 002783 | B6;129S2-Crhtm1Maj/J | Repository-Cryopreserved |
| Mice homozygous for the Crhtm1Maj targeted mutation are viable and fertile. Pups born to homozygous mothers must be supplemented with corticosterone in the drinking water (10-30ug/ml) from day 12 of gestation until weaning. Homozygous mutant mice have reduced adrenocortical secretion following stress. They may be susceptible to complications from hypoglycemia when fasting. Heterozygous mice are phenotypically indistinguishable from wildtype siblings. | ||
| 002657 | B6;129S2-En2tm1Alj/J | Repository-Cryopreserved |
| Mice homozygous for the En2tm1Alj targeted mutation are viable but show defects in adult cerebellar foliation patterning. Development is also delayed in areas of the brain with abnormal formation of specific fissures. The posterior region of the cerebellum is most severely affected. Both homozygotes and heterozygotes show an impairment in motor learning compared to wildtype littermates with the homozygotes improving the least in the rotating rod motor learning paradigm. | ||
| 003524 | B6;129S6-Lrp8tm1Her/J | Repository-Cryopreserved |
| Mutant mice have a targeted mutation of the apolipoprotein E receptor Lrp8 (also called Apoer2). Homozygotes are viable with no gross morphological abnormalities. Homozygous males have reduced fertility, while females are not affected. Using C-terminal specific antibodies, no endogenous protein is detected in the brains of homozygotes. Homozygous mice have a smaller and less foliated cerebellum with various hippocampus defects in granule cell positioning, cortical neuron migration, granule cell laminar organization, commissural fiber distribution, CA1 microtubule-associated protein 2 (MAP-2) distribution, and long term potentiation (LTP). Mutant mice show contextual fear conditioning deficits. These mice may be useful in studies of brain development, neuronal cytoarchitecture, Reelin signaling pathways, NMDA receptor activity, lipoprotein receptors, synaptic plasticity and learning, schizophrenia, and neurodegenerative disorders such as Alzheimer's disease. | ||
| 003120 | B6;129S7-L1camtm1Sor/J | Repository-Cryopreserved |
| The L1 gene is localized to the X chromosome. As a result, hemizygous males are affected and the mutation has to be propagated through females. Male mice hemizygous for the L1camtm1Sor targeted mutation have defects in the guidance of axons of the corticospinal tract. A substantial proportion of axons do not take their normal crossed course to the dorsal column at the pyramidal decussation. There is also a varying, but reduced number of corticospinal axons in the dorsal columns of the spinal cord. | ||
| 002402 | B6;129S7-Lifrtm1Imx/J | Repository-Cryopreserved |
| 003080 | B6;129X1-Emx1tm1Jlr/J | Repository-Cryopreserved |
| Mice homozygous for the Emx1 tm1Jlr targeted mutation are viable and fertile. They show no obvious morphological or behavioral abnormalities. However, all homozygous mice lack most or all of their corpus callosum, the principle fiber tract that connects the left and right cerebral hemispheres. Heterozygotes show partial penetrance for the corpus callosum abnormality. The cerebral cortex appears normal in both heterozygous and homozygous mice. | ||
| 004141 | B6;CBA-Tg(UAS-lacZ)65Rth/J | Repository-Cryopreserved |
| Mice homozygous for the transgenic insert are viable, fertile, normal in size and do not display any gross physical or behavioral abnormalities. Expression of the transgenic lacZ gene is directed by upstream activating sequence (UAS) elements. This strain serves as a reporter for mice employing GAL4/UAS bigenic system for controlled gene expression in the developing CNS. In this system, a transgenic strain expressing the yeast transcriptional activator GAL4 (see Stock No. 003829) is bred to a second transgenic, target strain bearing an UAS-regulated gene. In the double transgenic offspring, an UAS-regulated gene would be selectively expressed in tissues expressing GAL4. | ||
| 005050 | B6;CByJ-Cacna2d2du-3J/J | Repository-Cryopreserved |
| View strain phenotype and additional information on the Neuroscience Mutagenesis Facility web page for nmf299 entry. | ||
| 004360 | B6;SJL-Tg(HD)63Aron/J | Repository-Cryopreserved |
| These transgenic mice express the initial N-terminal third of the mutant human huntingtin gene (IT15) under the direction of the rat neuron-specific enolase promoter. Expected transgene expression was confirmed by Northern blot, RT-PCR and Western blot analysis. Mice heterozygous for the transgene have a phenotype mimicking much of the morphological and subcellular neuropathology that occurs in the striatum and cortex in human Huntington's disease. Behavioral abnormalities are varible in onset and intensity, beginning between three to six months of age. Transgenic mice exhibit increased levels of nuclear and cytoplasmic huntingtin and dysmorphic dendrites in the striatum and cortex. Electron microscopic analysis of nuclear inclusions of cortical and striatal neurons detects granular and filamentous structures that appear to be similar to structures seen in brain affected by Huntington's disease. Cortical stimulation and N-methyl-D-aspartate (NMDA) receptor activation produces abnormal
..... For more information please see the full descriiption on the strain data sheet | ||
| 000211 | B6C3Fe a/a-Dstdt-J/J | Repository-Cryopreserved |
| Mice homozygous for the dystonia musculorum-J spontaneous mutation (Dstdt-J)are recognizable at 7 to 10 days of age by clasping of the hindlimbs when mice are lifted by the tail. There is increasing incoordination with alternating hyperextension and hyperflexion of the limbs but no obvious paralysis. Many affected animals die before weaning, but some survive several months. The clinical condition becomes relatively stationary after the first phase of deterioration. Histologically, the nervous system shows degenerative changes and progressive loss of nerve fibers in the central and peripheral branches of the sensory ganglion cells of the spinal and cranial nerves, in the central sensory pathways, and in peripheral sensory structures such as skin, Pacinian corpuscles, and muscle spindles. In the PNS, there is some segmental demyelination and other abnormalities of the myelin sheaths. | ||
| 001035 | B6C3Fe a/a-Napahyh/J | Repository-Cryopreserved |
| Although no overt phenotype is appearant in newborn hyh mice, they have dilated lateral ventricles. By 2 weeks of age, an outward phenotype of a domed head and a hop gait is apparent. Dissection and histological examination reveal "hydrocephalus of lateral and third ventricles and of the caudal aspects of the cerebreal aquiduct" increasing in severity with age (Bronson et al., 1990). Homozygotes have a decreased lifespan usually dying before 2 months of age. Some homozygotes will live for several months, but usually will not breed. | ||
| 000245 | B6C3Fe a/a-tn/J | Repository-Cryopreserved |
| Mice homozygous for the teetering spontaneous mutation (tn) die between 5 and 6 weeks of age. Homozygous mutant mice are first recognizable at 25 to 30 days by their stiff, slow, unstable movements and their growth retardation. They may assume and maintain unusual postures. Occasionally they have running "fits". Just prior to death they look emaciated and lie on their sides with all limbs extended. In the brainstem and spinal cord there is dysgenesis of selective regions including the pons, trapezoid body, olivary and fastigial nuclei, and the pyramidal tract. There is also progressive Purkinje cell loss. | ||
| 002809 | B6CBA-Tg(HDexon1)61Gpb/1J | Repository-Cryopreserved |
| Mice have been generated that are transgenic for the 5' end of the human HD gene carrying (CAG)115-(CAG)150 repeat expansions. In both the 61Gpb and 62Gpb founder lines, the transgene is ubiquitously expressed. Transgenic mice exhibit a progressive neurological phenotype that mimics many of the features of HD, including choreiform-like movements, involuntary stereotypic movements, tremor, and epileptic seizures, as well as nonmovement disorder components, including unusual vocalization. They urinate frequently and exhibit loss of body weight and muscle bulk through the course of the disease. Neurologically they develop Neuronal Intranuclear Inclusions (NII) which contain both the huntingtin and ubiquitin proteins. These NII have also been identified in human HD patients. The age of onset of HD symptoms is reported to occur between 15 and 21 weeks for the 61Gpb line and between nine and 11 weeks for the 62Gpb line. | ||
| 002703 | B6CBACa Aw-J/A-Hydinhy3/J | Repository-Cryopreserved |
| Mice homozygous for the hydrocephalus 3 spontaneous mutation (Hydinhy3) are usually identifiable at 3 to 5 days. Those with frank hydrocephalus die by 4 or 5 weeks of age. The lateral ventricles and the third ventricle are enlarged, the aqueduct of Sylvius and the fourth ventricle are only slightly affected, and there is some dilatation of the ventral subarachnoid cistern. The hydrocephalus seems to be due to a defect in the subarachnoid space under the calvarium caused by an abnormal postnatal differentiation of the arachnoid mater and pia mater which prevents their separation. Penetrance is incomplete. | ||
| 007554 | B6SJL-Bmpertm1Emdr/J | Repository-Cryopreserved |
| Homozygous mutant mice die at birth due to respiratory failure. They display extensive skeletal abnormalities. At a lower penetrance, mutants show microphthalmia and exencephaly. RT-PCR was used to confirm expression in mouse embyronic fibroblasts. | ||
| 007553 | B6SJL-Twsg1tm1Emdr/J | Repository-Cryopreserved |
| Homozygotes are viable and fertile, but are small in size and display mild vertebral abnormalities and osteoporosis. At lower penetrance, homozygous mutants die at birth and display holoprosencephaly. A loss of expression was confirmed by RT-PCR of mutant E13.5 embryonic cells. | ||
| 002794 | C.129S4-Tcfap2atm1Jae/J | Repository-Cryopreserved |
| Mice homozygous for the Tcfap2atm1Jae mutation die around embryonic day 9.0-9.5 due to failure of cranial closure. These embryos also show multiple severe developmental defects of the face, skull, sensory organs, and cranial ganglia. There is increased apoptosis in the midbrain of day 9 embryos, coinciding with failure of cranial closure. | ||
| 003798 | C3Fe.Cg-Scn8amed/J | Repository-Cryopreserved |
| 003401 | C3H/HeJ-Lpin1fld-2J/J | Repository-Cryopreserved |
| Homozygous fatty liver dystrophy (fld) mice have an enlarged, fatty liver and hypertriglyceridemia which resolve to normal during the weaning transition. However, decreased overall size, decreased lipid in the fat pads, and a peripheral neuropathy persist throughout the lifespan. This peripheral neuropathy manifests as a tremor and an unsteady gait shortly after 10 days of age and worsens with age. The fld neuropathy is specific to the peripheral nervous system. Electron microscopy of sciatic nerves revealed thin, poorly compacted myelin sheaths, hypertrophic Schwann cells, myelin debris, degenerating axons, bands of Bugner, and regenerative clusters, but no evidence of inflammation (Langner et al, 1991). Western blot analysis of sciatic nerve from two-to-three month old fld/fld mice showed a 7-13-fold reduction in myelin P0, a vast increase in apoE, an increase in GAP-43, and no detectable myelin P2. It was also noted that a
..... For more information please see the full descriiption on the strain data sheet | ||
| 002235 | C3H/HeSnJ-Ctnna2cdf/J | Repository-Cryopreserved |
| Cerebellar deficient folia (cdf) is a recessive mutation which maps to chromosome 6. Homozygotes display a constant side-to-side wobble in their gait that is apparent as early as 2 weeks of age. Additionally, they often hold their tails off the surface or arch them over their heads while moving. Smaller size is detectable in homozygotes by two weeks of age, at weaning they weigh approximately 25% less than littermate controls, and as adults they weigh, on average, 50% less. These mutants live a normal life span (one-and-a-half to two years on the C3H/HeJ background), but homozygous males rarely breed and homozygous females are poor mothers requiring transfer of litters to foster mothers. The cdf mutation causes a hypoplastic and dysmorphic cerebellum. On the C3H/HeJ background, homozygotes have only 7 cerebellar folia rather than the 10 present in wildtype, and the folia pattern is abnormal. Their vermis is one-third smaller than wildtype in rostro-caudal length
..... | ||
| 001434 | C3HeB/FeJ x STX/Le-Mc1rE-so Gli3Xt-J Tw/J | Repository-Cryopreserved |
| Mice heterozygous for the twirler mutation (Tw) display head-shaking and circling behavior but are not deaf. There are morphological abnormalities of the inner ear which consist of irregularities in the outline of the semicircular canals, sometimes amounting to branching, and reduction or absence of otoliths. Moderate astrocytosis in the vestibular nuclei and cerebellar white matter has been reported. Homozygotes have cleft lip and palate or cleft palate only. They die within 24 hours after birth. Viability and fertility are normal except that adults tend to become obese and may then become sterile. Penetrance is incomplete. This strain is also carrying the sombre (Mc1rE-so) and extra toes-Jackson (Gli3St-J) mutations. Extra toes-J heterozygotes have varying numbers of extra digits on preaxial side of feet. Homozygotes die in utero with multiple abnormalities. Excessively large pharyngeal arches and an open neural tube are evident at E
..... For more information please see the full descriiption on the strain data sheet | ||
| 002854 | C57BL/6J-Nek1kat-2J/J | Repository-Cryopreserved |
| The phenotype associated with the Nek1kat-2J allele is more severe than that of the Nek1kat allele. Mice homozygous for Nek1kat-2J all die before one year of age, a third of those that survive weaning die suddenly before 100 days of age, and the reported median survival age is 211 days. Mice homozygous for Nek1kat also have a shortened life expectancy with high pre-weaning mortality and a reported median survival of 286 days, but 22% were found to survive beyond 1 year. Both mutants are runted and have blunted noses with olfactory bulbs that are approximately half the normal size and lack most of the glomerular and external granular layers. In the brain there is dilation of the lateral and third ventricles, cerebral aqueduct and fourth ventricle along with large, fluid-filled cysts in the choroid plexus. Hydrocephalus occurs. Normochromic normocytic anemia is found and is more pronounced in Nek1Kat-2J
..... For more information please see the full descriiption on the strain data sheet | ||
| 004831 | C57BL/6J-nmf219/J | Repository-Cryopreserved |
| View strain phenotype and additional information on the Neuroscience Mutagenesis Facility web page for nmf219 entry. | ||
| 003581 | CBy.129S4-Dab1tm1Cpr/J | Repository-Cryopreserved |
| Homozygous Dab1-null mice become tremulous and ataxic at approximately postnatal day 10. Multiple defects can be detected in brain tissue. Lamellar structures in the cortex and hippocampus appear disorganized and the cerebellum is small and disorganized. Although homozygotes null reportedly die at 4-5 weeks on a mixed B6,129 or 129/Sv background, mice on a BALB/cByJ are viable. | ||
| 000293 | CHMU/LeJ | Repository-Cryopreserved |
| Mice homozygous for the congenital hydrocephalus (Foxc1ch) spontaneous mutation die at birth, probably from inability to breathe. Homozygous mutant mice have bulging hemorrhagic cerebral hemispheres and open eyelids, urogenital abnormalities, and severely abnormal skull, cervical vertebrae, sternum, laryngeal cartilages, and hyoid bone. The hydrocephalus may trace to lack of formation of subarachnoid space, which is first detectable in 11-day embryos. Most of the defects in the head region are probably secondary to the severe displacements created by the hydrocephalus. Mice homozygous for the muted spontaneous mutation (Mutedmu), maintained in repulsion with congenital hydrocephalus, have light eyes at birth and their fur is a muted brown shade, often with white underfur. Some have a balance defect, similar to that of pallid (Pldnpa). Homozygous mutant mice show head-tilting and loss of postural reflexes, due to absence of otoliths
..... For more information please see the full descriiption on the strain data sheet | ||
| 003219 | D2.129P2(B6)-Nr5a1tm1Klp/EiJ | Repository-Cryopreserved |
| Mice homozygous for the Nr5a1tm1Klp (formerly Ftzf1tm1Klp) targeted mutation exhibit adrenal and gonadal agenesis. There is also an absence of the ventromedial hypothalamic nucleus leading to impaired expression of gonadotrope specific markers. | ||
| 000252 | DC/LeJ | Repository-Cryopreserved |
| Mice heterozygous for the semidominant dancer mutation exhibit head tossing and circling behavior. Heterozygotes are not deaf, but have defects in the vestibular region (Wenngren et al., 1989). Homozygotes die at birth with cleft lip and cleft palate (Deol et al., 1966). Strain background influences cleft lip/palate expression in heterozygotes (Trasler et al., 1982). Positional cloning of Dc revealed a 3.3 kb insertion of the Tebp gene into the first intron of Tbx10. The insertion causes ectopic expression of a Tebp-Tbx10 chimeric transcript (Bush et al., 2004). | ||
| 000619 | FS/EiJ | Repository-Cryopreserved |
| The FS/Ei strain was originally used as a linkage testing stock for gene mapping. It is homozygous for several visible recessive mutations including brown (Tyrp1b), pink-eyed dilution (Oca2p), chinchilla (Tyrc-ch), frizzy (fr), and the neurological mutation shaker 1 (Myo7ash1). It is also homozygous for a couple allelic variants that can be easily typed (Mod2b and Hbbd). Mice homozygous for the shaker 1 show circling, head-tossing, deafness, and hyperactivity characteristic of this type of mutant mice. Viability is normal, and breeding ability is high for a circling mutant. Homozygous mutant mice are most often deaf and swim well on the surface of water up to 4 weeks of age and more but lose the ability later. The degenerative changes of the labyrinth may occur a little later than in some of the other waltzing mutants. By light microscopy, the changes are seen to consist
..... For more information please see the full descriiption on the strain data sheet | ||
| 003640 | FVB/NJ-Tg(YAC72)2511Hay/J | Repository-Cryopreserved |
| Mice homozygous for this transgene are viable and fertile. The human huntingtin transgenic protein is expressed widely in many tissues (identical to the endogenous huntingtin protein), but has highest levels of expression in the brain and testes. Electrophysiological abnormalities can be measured by six months. A behavioral phenotype is first detected at seven months when evidence of mild hyperkinetic movement disorder is noticeable. This disorder is characterized by progressive spontaneous hyperactivity during the dark phase of open field-testing. By 12 months of age selective degeneration of medium spiny neurons in the lateral striatum is observed. This degeneration is associated with the translocation of N-terminal huntingtin fragments to the nucleus. This strain represents a Huntington's Disease mouse model where a mutant full-length human huntingtin is expressed under control of its endogenous promoter. | ||
| 000262 | LS/LeJ | Repository-Cryopreserved |
| Mice homozygous for the lethal spotting mutation (Edn3ls) resemble piebald mice (Ednrbs/Ednrbs) mice. Homozygous mutant mice exhibit considerable white spotting and like homozygotes for the piebald-lethal allele (Ednrbs-l) usually develop megacolon. Lethal spotting mutant mice usually die in the third week of life from the megacolon abnormality, which is associated with deficiency of intrinsic ganglion cells in the lower colon. A few homozygotes may survive and breed. This strain is also homozygous for the black and tan coat color mutation (at). | ||
| 000271 | SH1/LeJ | Repository-Cryopreserved |
| Mice homozygous for the shaker 1 spontaneous mutation (Myo7ash1) show circling, head-tossing, deafness, and hyperactivity characteristic of this type of mutant mice. Viability is normal, and breeding ability is high for a circling mutant. Homozygous mutant mice are most often deaf and swim well on the surface of water up to 4 weeks of age and more but lose the ability later. The degenerative changes of the labyrinth may occur a little later than in some of the other waltzing mutants. By light microscopy, the changes are seen to consist of degeneration of the organ of Corti, the spiral ganglion, and the stria vascularis in the cochlea, and of the saccular macula and the vestibular ganglion in the vestibular labyrinth. | ||
| 000308 | SSL/LeJ | Repository-Cryopreserved |
| This inbred strain carries both the piebald (Ednrbs) and piebald lethal (Ednrbs-l) alleles. Homozygous piebald mice show irregular white spotting, the amount of which is greatly influenced by minor modifying genes. They also have dark eyes. Homozygous piebald lethal mice are almost completely white with dark eyes and only an occasional small pigmented spot on the head or rump. Piebald-piebald lethal heterozygotes (Ednrbs/Ednrbs-l) mice resemble piebald mice in the degree of spotting. The piebald mutations disrupt the development of melanocytes derived from the neural crest. All piebald lethal homozygotes develop megacolon with a lack of enteric ganglion cells in the posterior end of the colon. On the SSL/Le background, although many Ednrbs-l homozygotes die between 2 and 4 weeks of age, significant numbers survive and may breed. The incidence of megacolon is reduced in piebald and piebald-piebald lethal
..... For more information please see the full descriiption on the strain data sheet | ||
| 000306 | STOCK Dll3pu + Tyrc-ch/+ Oca2p Tyrc-ch/J | Repository-Cryopreserved |
| 002656 | STOCK En1tm1Alj/J | Repository-Cryopreserved |
| Mice homozygous for the En1tm1Alj targeted mutation die shortly after birth. They are missing the third and fourth cranial nerves as well as most of the colliculi and cerebellum. The brain phenotype can be less severe depending on the genetic background. There is also a disruption of the dorsal/ventral patterning of the limb paws, a disrupted sterum, and truncation of the 13th ribs. Deletion of mid-hindbrain tissue may be seen as early as embryonic day 9.5. | ||
| 002906 | STOCK Evi1tm1Mmor/J | Repository-Cryopreserved |
| Evi1 mutant embryos die at E10.5 due to widespread hypocellularity, hemorrahaging, and disruption in the development of paraxial mesenchyme. In addition, defects in the heart, somites, and cranial ganglia were detected and the peripheral nervous system fails to develop. | ||
| 003318 | STOCK Shhtm1Amc/J | Repository-Cryopreserved |
| Mice homozygous for the Shhtm1Amc targeted mutation display early defects in the establishment and maintenance of midline structures. These defects result from the critical role the Sonic hedgehog (Shh) gene plays in the patterning patterning of vertebrate embryonic tissues, including the brain and spinal cord, the axial skeleton and the limbs. Defects are also observed in all tissues, confirming the proposed role of SHH proteins as an extracellular signal required for the tissue-organizing properties of several vertebrate patterning centers.
When bred to a strain with loxP sites inserted into the same targeted allele (Stock No. 004293) and a strain expressing Cre recombinase in the skin and dental epithelium (Stock No. 004782), this mutant mouse strain may be useful in studies of hedgehog signalling and cell proliferation in the dental e
..... | ||
| 000206 | STOCK a/a Tyrc-h/J | Repository-Cryopreserved |
| 000312 | STOCK stb + a/+ Fignfi a/J | Repository-Cryopreserved |
| Mice homozygous for the fidget spontaneous mutation (Fignfi) toss their heads from side to side and tend to run in circles. Homozygous fidgit mice are hypersensitive to sound in early life, but later lose hearing ability. Corneal lesions are common, and hind foot polydactylism occurs. The bony labyrinth is quite defective. Other abnormalities including small eyes, absence of lachrymal glands, dislocation of the hip, and displaced parafloccular lobes of the cerebellum. Viability of homozygotes is usually less than normal and fertility is poor. The STOCK is also carrying the stubby spontaneous mutation (stb). Homozygous stubby mice are recognizable at 4 or 5 days by a domed head and thick short tail. Adult stubby mice have shorter heads, bodies, and legs compared to wildtype mice. Most females are fertile but males do not breed. Male mice do produce normal numbers of motile sperm. Cartilage histology is within normal limits, but chondrogenesis stops earlier than
..... For more information please see the full descriiption on the strain data sheet | ||
| 000575 | TKDU/DnJ | Repository-Cryopreserved |
| Mice homozygous for the ducky spontaneous mutation (Cacna2d2du) show a waddling or reeling gait and a tendency to fall to one side. Homozygous mutant mice are slightly smaller than normal and may occasionally have seizures. Histologically, homozygotes show severe dysgenesis of hindbrain and spinal cord, myelin deficiency that is more marked the more caudad the CNS region, and demyelination and axonal dystrophy in selective fiber systems including the spinocerebellar and vestibulospinal tracts. There is a deficit of cerebrosides in the hindbrain and spinal cord, but other lipid classes are present in normal amounts relative to the size of the CNS. Viability is somewhat less than normal. Males living to maturity may be fertile, but are poor breeders. Females rarely breed. In mice homozygous for either Cacna2d2du or Cacna2d2du-2J, no loss of Purkinje cells or granular cells was seen by immunohistochemistry for calbindin or calretinin r
..... For more information please see the full descriiption on the strain data sheet | ||
| 000275 | V/LeJ | Repository-Cryopreserved |
| This strain was originally used as a linkage stock for gene mapping. It is homozygous for several visible recessive mutations all located on different chromosomes including nonagouti (a), fuzzy (fz), leaden (Mlphln), and piebald (Ednrbs) and is segregating for the neurological mutation, waltzer (Cdh23v). Homozygous waltzer mice show the circling, head-tossing, deafness, and hyperactivity typical of the circling mutants. Abnormalities of the inner ear include degeneration of the organ of Corti, spiral ganglion, stria vascularis, and saccular macula. Homozygous piebald mice show irregular white spotting, the amount of which is greatly influenced by minor modifying genes. Homozygous piebald mice have dark eyes. The white areas of the coat are completely lacking in melanocytes and there is a reduction in the number of melanocytes in the choroid layer of the eye. | ||
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