Strain Name:

B6;129S-F8tm1Kaz/J

Stock Number:

004424

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Availability:

Repository- Live

Use Restrictions Apply, see Terms of Use
These knock-out mice are deficient of endogenous Factor VIII making them useful for hemophilia A studies.

Description

Strain Information

Former Names B6;129S4-F8tm1Kaz/J    (Changed: 01-AUG-12 )
Type Mutant Stock; Targeted Mutation;
Additional information on Genetically Engineered and Mutant Mice.
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Mating SystemHomozygote x Hemizygote         (Female x Male)   01-MAR-06
Specieslaboratory mouse
GenerationF?+11N1F13 (24-JAN-14)
Generation Definitions
 
Donating Investigator Haig H. Kazazian, Jr.,   University of Pennsylvania

Description
Mice that are homozygous for the targeted, X chromosome-linked mutant allele are viable and fertile. Homozygous females and carrier males have less than 1% of normal factor VIII activity and exhibit prolonged clotting times. Care should be used when obtaining tail clippings for the purpose of genotyping. Clipped tails of affected mice must be cauterized immediately or the mouse will succumb to excessive blood loss within several hours. Only mice that have reached the age of 4 weeks or older should have their tails clipped. Published reports indicate that spontaneous bleeding into joints or soft tissues, and that no bleeding difficulties are apparent during birth. These mice recapitulate key features of hemophilia A and provide an excellent model for use in exploring gene therapy strategies.

NOTE: It has been the experience of The Jackson Laboratory, in contrast to the primary publication, and possibly due to genetic background differences as a result of continuous inbreeding, animals homozygous or hemizygous for the F8tm1Kaz allele do exhibit bleeding into joints and soft tissues.

Development
A targeting vector containing a neo cassette was used to disrupt exon 16. The construct was introduced into 129S4/SvJae-derived J1 embryonic stem (ES) cells. Correctly targeted ES cells were injected into C57BL/6 blastocysts.

Control Information

  Control
   101045 B6129SF2/J (approximate)
 
  Considerations for Choosing Controls

Related Strains

Strains carrying   F8tm1Kaz allele
017706   STOCK F8tm1Kaz Tg(Alb-F8*R593C)T4Mcal/J
View Strains carrying   F8tm1Kaz     (1 strain)

Phenotype

Phenotype Information

View Related Disease (OMIM) Terms

Related Disease (OMIM) Terms provided by MGI
Models with phenotypic similarity to human diseases where etiology is unknown or involving genes where ortholog is unknown.
Hemophilia A; HEMA
View Mammalian Phenotype Terms

Mammalian Phenotype Terms provided by MGI
      assigned by genotype

F8tm1Kaz/F8tm1Kaz

        involves: 129S4/SvJae * C57BL/6
  • mortality/aging
  • increased sensitivity to induced morbidity/mortality
    • 2/3 mice die within 2 hours of tail snipping from excessive bleeding   (MGI Ref ID J:36698)
  • reproductive system phenotype
  • *normal* reproductive system phenotype
    • females exhibit normal fertility and pregnancy   (MGI Ref ID J:36698)
  • homeostasis/metabolism phenotype
  • abnormal blood coagulation
    • 2/3 mice die within 2 hours of tail snipping from excessive bleeding   (MGI Ref ID J:36698)
  • hematopoietic system phenotype
  • *normal* hematopoietic system phenotype
    • males exhibit no spontaneous bleeding, illness or reduction in activity up to 1 year of age   (MGI Ref ID J:36698)

F8tm1Kaz/Y

        involves: 129S4/SvJae * C57BL/6
  • mortality/aging
  • increased sensitivity to induced morbidity/mortality
    • 2/3 males die within 2 hours of tail snipping from excessive bleeding   (MGI Ref ID J:36698)
    • mice exhibit a reduced ability to clot blood upon tail cutting, with most animals dying within 2 hours of tail snipping unless cauterized   (MGI Ref ID J:24941)
  • homeostasis/metabolism phenotype
  • abnormal blood coagulation
    • male hemizygous mice exhibit hemophilia   (MGI Ref ID J:24941)
    • mice exhibit a reduced ability to clot blood upon tail cutting, with most animals dying within 2 hours of tail snipping unless cauterized   (MGI Ref ID J:24941)
    • plasma from mutant mice exhibits a prolonged clotting time compared to controls   (MGI Ref ID J:24941)
    • 2/3 males die within 2 hours of tail snipping from excessive bleeding   (MGI Ref ID J:36698)
  • hematopoietic system phenotype
  • *normal* hematopoietic system phenotype
    • no spontaneous bleeding is observed into joints or soft tissues up to 12 weeks of age   (MGI Ref ID J:24941)
    • males exhibit no spontaneous bleeding, illness or reduction in activity up to 1 year of age   (MGI Ref ID J:36698)
  • immune system phenotype
  • abnormal immune tolerance
    • mutants develop anti-factor VIII antibodies following administration of factor VIII   (MGI Ref ID J:178969)
View Research Applications

Research Applications
This mouse can be used to support research in many areas including:

F8tm1Kaz related

Hematological Research
Clotting Defects

Genes & Alleles

Gene & Allele Information provided by MGI

 
Allele Symbol F8tm1Kaz
Allele Name targeted mutation 1, Haig H Kazazian Jr
Allele Type Targeted (knock-out)
Common Name(s) E-16; FVIII KO; HemA; MFVIII-16;
Mutation Made By Haig Kazazian, Jr.,   University of Pennsylvania
Strain of Origin129S4/SvJae
ES Cell Line NameJ1
ES Cell Line Strain129S4/SvJae
Gene Symbol and Name F8, coagulation factor VIII
Chromosome X
Gene Common Name(s) AHF; Cf-8; Cf8; DXS1253E; F8B; F8C; FVIII; Factor VIII; HEMA;
Molecular Note A neomycin resistance cassette replaced 293 bp of sequence, including 7 bp at the 3' end of exon 16 and 286 bp at the 5' end of intron 16. Two different activity assays indicated that the mutated allele produced protein with levels of activity less than 1% of wild-type levels. [MGI Ref ID J:24941]

Genotyping

Genotyping Information

Genotyping Protocols

F8tm1Kaz, Separated PCR


Helpful Links

Genotyping resources and troubleshooting

References

References provided by MGI

Selected Reference(s)

Bi L; Lawler AM; Antonarakis SE; High KA; Gearhart JD; Kazazian HH Jr. 1995. Targeted disruption of the mouse factor VIII gene produces a model of haemophilia A [letter] Nat Genet 10(1):119-21. [PubMed: 7647782]  [MGI Ref ID J:24941]

Additional References

Fakharzadeh SS; Zhang Y; Sarkar R; Kazazian HH Jr. 2000. Correction of the coagulation defect in hemophilia A mice through factor VIII expression in skin. Blood 95(9):2799-805. [PubMed: 10779424]  [MGI Ref ID J:61846]

F8tm1Kaz related

Ai D; Pang W; Li N; Xu M; Jones PD; Yang J; Zhang Y; Chiamvimonvat N; Shyy JY; Hammock BD; Zhu Y. 2009. Soluble epoxide hydrolase plays an essential role in angiotensin II-induced cardiac hypertrophy. Proc Natl Acad Sci U S A 106(2):564-9. [PubMed: 19126686]  [MGI Ref ID J:143868]

Aronovich A; Nur Y; Shezen E; Rosen C; Zlotnikov Klionsky Y; Milman I; Yarimi L; Hagin D; Rechavi G; Martinowitz U; Nagasawa T; Frenette PS; Tchorsh-Yutsis D; Reisner Y. 2013. A novel role for factor VIII and thrombin/PAR1 in regulating hematopoiesis and its interplay with the bone structure. Blood 122(15):2562-71. [PubMed: 23982175]  [MGI Ref ID J:203434]

Bi L; Sarkar R; Naas T; Lawler AM; Pain J; Shumaker SL; Bedian V; Kazazian HH Jr. 1996. Further characterization of factor VIII-deficient mice created by gene targeting: RNA and protein studies. Blood 88(9):3446-50. [PubMed: 8896409]  [MGI Ref ID J:36698]

Bril WS; van Helden PM; Hausl C; Zuurveld MG; Ahmad RU; Hollestelle MJ; Reitsma PH; Fijnvandraat K; van Lier RA; Schwarz HP; Mertens K; Reipert BM; Voorberg J. 2006. Tolerance to factor VIII in a transgenic mouse expressing human factor VIII cDNA carrying an Arg(593) to Cys substitution. Thromb Haemost 95(2):341-7. [PubMed: 16493498]  [MGI Ref ID J:178969]

Chauhan AK; Kisucka J; Lamb CB; Bergmeier W; Wagner DD. 2007. von Willebrand factor and factor VIII are independently required to form stable occlusive thrombi in injured veins. Blood 109(6):2424-9. [PubMed: 17119108]  [MGI Ref ID J:145354]

Dimitrov JD; Dasgupta S; Navarrete AM; Delignat S; Repesse Y; Meslier Y; Planchais C; Teyssandier M; Motterlini R; Bayry J; Kaveri SV; Lacroix-Desmazes S. 2010. Induction of heme oxygenase-1 in factor VIII-deficient mice reduces the immune response to therapeutic factor VIII. Blood 115(13):2682-5. [PubMed: 19890094]  [MGI Ref ID J:160804]

Dumont JA; Liu T; Low SC; Zhang X; Kamphaus G; Sakorafas P; Fraley C; Drager D; Reidy T; McCue J; Franck HW; Merricks EP; Nichols TC; Bitonti AJ; Pierce GF; Jiang H. 2012. Prolonged activity of a recombinant factor VIII-Fc fusion protein in hemophilia A mice and dogs. Blood 119(13):3024-30. [PubMed: 22246033]  [MGI Ref ID J:182551]

Evans GL; Morgan RA. 1998. Genetic induction of immune tolerance to human clotting factor VIII in a mouse model for hemophilia A. Proc Natl Acad Sci U S A 95(10):5734-9. [PubMed: 9576953]  [MGI Ref ID J:47661]

Fakharzadeh SS; Zhang Y; Sarkar R; Kazazian HH Jr. 2000. Correction of the coagulation defect in hemophilia A mice through factor VIII expression in skin. Blood 95(9):2799-805. [PubMed: 10779424]  [MGI Ref ID J:61846]

Follenzi A; Raut S; Merlin S; Sarkar R; Gupta S. 2012. Role of bone marrow transplantation for correcting hemophilia A in mice. Blood 119(23):5532-42. [PubMed: 22368271]  [MGI Ref ID J:186576]

Greene TK; Wang C; Hirsch JD; Zhai L; Gewirtz J; Thornton MA; Miao HZ; Pipe SW; Kaufman RJ; Camire RM; Arruda VR; Kowalska MA; Poncz M. 2010. In vivo efficacy of platelet-delivered, high specific activity factor VIII variants. Blood 116(26):6114-22. [PubMed: 20852129]  [MGI Ref ID J:167399]

Hakobyan N; Kazarian T; Jabbar AA; Jabbar KJ; Valentino LA. 2004. Pathobiology of hemophilic synovitis I: overexpression of mdm2 oncogene. Blood 104(7):2060-4. [PubMed: 15172967]  [MGI Ref ID J:93755]

Hrachovinova I; Cambien B; Hafezi-Moghadam A; Kappelmayer J; Camphausen RT; Widom A; Xia L; Kazazian HH Jr; Schaub RG; McEver RP; Wagner DD. 2003. Interaction of P-selectin and PSGL-1 generates microparticles that correct hemostasis in a mouse model of hemophilia A. Nat Med 9(8):1020-5. [PubMed: 12858167]  [MGI Ref ID J:99599]

Kawasaki T; Dewerchin M; Lijnen HR; Vreys I; Vermylen J; Hoylaerts MF. 2001. Mouse carotid artery ligation induces platelet-leukocyte-dependent luminal fibrin, required for neointima development. Circ Res 88(2):159-66. [PubMed: 11157667]  [MGI Ref ID J:115383]

Litzinger MT; Su Y; Lei TC; Soukhareva N; Scott DW. 2005. Mechanisms of gene therapy for tolerance: B7 signaling is required for peptide-IgG gene-transferred tolerance induction. J Immunol 175(2):780-7. [PubMed: 16002674]  [MGI Ref ID J:100709]

Macauley MS; Pfrengle F; Rademacher C; Nycholat CM; Gale AJ; von Drygalski A; Paulson JC. 2013. Antigenic liposomes displaying CD22 ligands induce antigen-specific B cell apoptosis. J Clin Invest 123(7):3074-83. [PubMed: 23722906]  [MGI Ref ID J:201430]

Maroney SA; Cooley BC; Ferrel JP; Bonesho CE; Nielsen LV; Johansen PB; Hermit MB; Petersen LC; Mast AE. 2012. Absence of hematopoietic tissue factor pathway inhibitor mitigates bleeding in mice with hemophilia. Proc Natl Acad Sci U S A 109(10):3927-31. [PubMed: 22355108]  [MGI Ref ID J:182144]

Matsui H; Shibata M; Brown B; Labelle A; Hegadorn C; Andrews C; Chuah M; VandenDriessche T; Miao CH; Hough C; Lillicrap D. 2009. A murine model for induction of long-term immunologic tolerance to factor VIII does not require persistent detectable levels of plasma factor VIII and involves contributions from Foxp3+ T regulatory cells. Blood 114(3):677-85. [PubMed: 19458355]  [MGI Ref ID J:150739]

McIntosh J; Lenting PJ; Rosales C; Lee D; Rabbanian S; Raj D; Patel N; Tuddenham EG; Christophe OD; McVey JH; Waddington S; Nienhuis AW; Gray JT; Fagone P; Mingozzi F; Zhou SZ; High KA; Cancio M; Ng CY; Zhou J; Morton CL; Davidoff AM; Nathwani AC. 2013. Therapeutic levels of FVIII following a single peripheral vein administration of rAAV vector encoding a novel human factor VIII variant. Blood 121(17):3335-44. [PubMed: 23426947]  [MGI Ref ID J:196695]

Meeks SL; Cox CL; Healey JF; Parker ET; Doshi BS; Gangadharan B; Barrow RT; Lollar P. 2012. A major determinant of the immunogenicity of factor VIII in a murine model is independent of its procoagulant function. Blood 120(12):2512-20. [PubMed: 22855607]  [MGI Ref ID J:191310]

Mei B; Pan C; Jiang H; Tjandra H; Strauss J; Chen Y; Liu T; Zhang X; Severs J; Newgren J; Chen J; Gu JM; Subramanyam B; Fournel MA; Pierce GF; Murphy JE. 2010. Rational design of a fully active, long-acting PEGylated factor VIII for hemophilia A treatment. Blood 116(2):270-9. [PubMed: 20194895]  [MGI Ref ID J:162833]

Miao CH; Harmeling BR; Ziegler SF; Yen BC; Torgerson T; Chen L; Yau RJ; Peng B; Thompson AR; Ochs HD; Rawlings DJ. 2009. CD4+FOXP3+ regulatory T cells confer long-term regulation of factor VIII-specific immune responses in plasmid-mediated gene therapy-treated hemophilia mice. Blood 114(19):4034-44. [PubMed: 19713458]  [MGI Ref ID J:154194]

Milanov P; Ivanciu L; Abriss D; Quade-Lyssy P; Miesbach W; Alesci S; Tonn T; Grez M; Seifried E; Schuttrumpf J. 2012. Engineered factor IX variants bypass FVIII and correct hemophilia A phenotype in mice. Blood 119(2):602-11. [PubMed: 22031860]  [MGI Ref ID J:181577]

Neyman M; Gewirtz J; Poncz M. 2008. Analysis of the spatial and temporal characteristics of platelet-delivered factor VIII-based clots. Blood 112(4):1101-8. [PubMed: 18559671]  [MGI Ref ID J:139175]

Ohlfest JR; Frandsen JL; Fritz S; Lobitz PD; Perkinson SG; Clark KJ; Nelsestuen G; Key NS; McIvor RS; Hackett PB; Largaespada DA. 2005. Phenotypic correction and long-term expression of factor VIII in hemophilic mice by immunotolerization and nonviral gene transfer using the Sleeping Beauty transposon system. Blood 105(7):2691-8. [PubMed: 15576475]  [MGI Ref ID J:105059]

Purohit VS; Ramani K; Sarkar R; Kazazian HH Jr; Balasubramanian SV. 2005. Lower inhibitor development in hemophilia A mice following administration of recombinant factor VIII-O-phospho-L-serine complex. J Biol Chem 280(18):17593-600. [PubMed: 15728582]  [MGI Ref ID J:99097]

Qadura M; Waters B; Burnett E; Chegeni R; Bradshaw S; Hough C; Othman M; Lillicrap D. 2009. Recombinant and plasma-derived factor VIII products induce distinct splenic cytokine microenvironments in hemophilia A mice. Blood 114(4):871-80. [PubMed: 19411636]  [MGI Ref ID J:150765]

Qian J; Collins M; Sharpe AH; Hoyer LW. 2000. Prevention and treatment of factor VIII inhibitors in murine hemophilia A. Blood 95(4):1324-9. [PubMed: 10666206]  [MGI Ref ID J:110275]

Ragni MV; Wu W; Liang X; Hsieh CC; Cortese-Hassett A; Lu L. 2009. Factor VIII-pulsed dendritic cells reduce anti-factor VIII antibody formation in the hemophilia A mouse model. Exp Hematol 37(6):744-54. [PubMed: 19463774]  [MGI Ref ID J:151239]

Rastegarlari G; Pegon JN; Casari C; Odouard S; Navarrete AM; Saint-Lu N; van Vlijmen BJ; Legendre P; Christophe OD; Denis CV; Lenting PJ. 2012. Macrophage LRP1 contributes to the clearance of von Willebrand factor. Blood 119(9):2126-34. [PubMed: 22234691]  [MGI Ref ID J:182558]

Rossi G; Sarkar J; Scandella D. 2001. Long-term induction of immune tolerance after blockade of CD40-CD40L interaction in a mouse model of hemophilia A. Blood 97(9):2750-7. [PubMed: 11313267]  [MGI Ref ID J:70448]

Sack BK; Merchant S; Markusic DM; Nathwani AC; Davidoff AM; Byrne BJ; Herzog RW. 2012. Transient B cell depletion or improved transgene expression by codon optimization promote tolerance to factor VIII in gene therapy. PLoS One 7(5):e37671. [PubMed: 22655063]  [MGI Ref ID J:187309]

Sen D; Chapla A; Walter N; Daniel V; Srivastava A; Jayandharan GR. 2013. Nuclear factor (NF)-kappaB and its associated pathways are major molecular regulators of blood-induced joint damage in a murine model of hemophilia. J Thromb Haemost 11(2):293-306. [PubMed: 23231432]  [MGI Ref ID J:195442]

Siner JI; Iacobelli NP; Sabatino DE; Ivanciu L; Zhou S; Poncz M; Camire RM; Arruda VR. 2013. Minimal modification in the factor VIII B-domain sequence ameliorates the murine hemophilia A phenotype. Blood 121(21):4396-403. [PubMed: 23372167]  [MGI Ref ID J:197469]

Skupsky J; Zhang AH; Su Y; Scott DW. 2009. A role for thrombin in the initiation of the immune response to therapeutic factor VIII. Blood 114(21):4741-8. [PubMed: 19794141]  [MGI Ref ID J:155485]

Stennicke HR; Kjalke M; Karpf DM; Balling KW; Johansen PB; Elm T; Ovlisen K; Moller F; Holmberg HL; Gudme CN; Persson E; Hilden I; Pelzer H; Rahbek-Nielsen H; Jespersgaard C; Bogsnes A; Pedersen AA; Kristensen AK; Peschke B; Kappers W; Rode F; Thim L; Tranholm M; Ezban M; Olsen EH; Bjorn SE. 2013. A novel B-domain O-glycoPEGylated FVIII (N8-GP) demonstrates full efficacy and prolonged effect in hemophilic mice models. Blood 121(11):2108-16. [PubMed: 23335368]  [MGI Ref ID J:195866]

Waters B; Qadura M; Burnett E; Chegeni R; Labelle A; Thompson P; Hough C; Lillicrap D. 2009. Anti-CD3 prevents factor VIII inhibitor development in hemophilia A mice by a regulatory CD4+CD25+-dependent mechanism and by shifting cytokine production to favor a Th1 response. Blood 113(1):193-203. [PubMed: 18815284]  [MGI Ref ID J:144256]

Xu D; Alipio Z; Fink LM; Adcock DM; Yang J; Ward DC; Ma Y. 2009. Phenotypic correction of murine hemophilia A using an iPS cell-based therapy. Proc Natl Acad Sci U S A 106(3):808-13. [PubMed: 19139414]  [MGI Ref ID J:143861]

Yarovoi H; Nurden AT; Montgomery RR; Nurden P; Poncz M. 2005. Intracellular interaction of von Willebrand factor and factor VIII depends on cellular context: lessons from platelet-expressed factor VIII. Blood 105(12):4674-6. [PubMed: 15731176]  [MGI Ref ID J:107451]

Zhang AH; Skupsky J; Scott DW. 2011. Effect of B-cell depletion using anti-CD20 therapy on inhibitory antibody formation to human FVIII in hemophilia A mice. Blood 117(7):2223-6. [PubMed: 21160036]  [MGI Ref ID J:169609]

Health & husbandry

Health & Colony Maintenance Information

Animal Health Reports

Room Number           AX11

Colony Maintenance

Breeding & HusbandryThis strain originated on a B6;129S4 background. It is maintained by crossing homozygous females x hemizygous males on the same background. Expected coat color: Agouti and black. Homozygous females and carrier males have less than 1% of normal factor VIII activity and exhibit prolonged clotting times. Care should be exercise when obtaining tail clippings for the purpose of genotyping. Clipped tails of affected mice must be cauterized immediately or the mouse will succumb to excessive blood loss within several hours.

NOTE: It has been the experience of The Jackson Laboratory, in contrast to the primary publication, and possibly due to genetic background differences as a result of continuous inbreeding, animals homozygous or hemizygous for the F8tm1Kaz allele do exhibit bleeding into joints and soft tissues.

Mating SystemHomozygote x Hemizygote         (Female x Male)   01-MAR-06
Diet Information LabDiet® 5K52/5K67

Pricing and Purchasing

Pricing, Supply Level & Notes, Controls


Pricing for USA, Canada and Mexico shipping destinations View International Pricing

Live Mice

Price per mouse (US dollars $)GenderGenotypes Provided
Individual Mouse $195.00MaleHemizygous for F8tm1Kaz  
$195.00FemaleHomozygous for F8tm1Kaz  
Price per Pair (US dollars $)Pair Genotype
$390.00Homozygous for F8tm1Kaz x Hemizygous for F8tm1Kaz  

Standard Supply

Repository-Live.
Repository-Live represents an exclusive set of over 1500 unique mouse models across a vast array of research areas. Breeding colonies provide mice for both large and small orders and fluctuate in size depending on current demand for each strain. If a Repository strain is not immediately available, then within 2 to 3 business days, you will receive an estimated availability timeframe for your inquiry or order along with various delivery options. Repository strains typically are delivered at 4 to 8 weeks of age and will not exceed 12 weeks of age on the day of shipping. We will note and try to accommodate requests for specific ages of Repository strains but cannot guarantee provision of these strains at specific ages. However, if cohorts of mice (5 or more of one gender) are needed at a specific age range for experiments, please let us know.

Pricing for International shipping destinations View USA Canada and Mexico Pricing

Live Mice

Price per mouse (US dollars $)GenderGenotypes Provided
Individual Mouse $253.50MaleHemizygous for F8tm1Kaz  
$253.50FemaleHomozygous for F8tm1Kaz  
Price per Pair (US dollars $)Pair Genotype
$507.00Homozygous for F8tm1Kaz x Hemizygous for F8tm1Kaz  

Standard Supply

Repository-Live.
Repository-Live represents an exclusive set of over 1500 unique mouse models across a vast array of research areas. Breeding colonies provide mice for both large and small orders and fluctuate in size depending on current demand for each strain. If a Repository strain is not immediately available, then within 2 to 3 business days, you will receive an estimated availability timeframe for your inquiry or order along with various delivery options. Repository strains typically are delivered at 4 to 8 weeks of age and will not exceed 12 weeks of age on the day of shipping. We will note and try to accommodate requests for specific ages of Repository strains but cannot guarantee provision of these strains at specific ages. However, if cohorts of mice (5 or more of one gender) are needed at a specific age range for experiments, please let us know.

View USA Canada and Mexico Pricing View International Pricing

Standard Supply

Repository-Live.
Repository-Live represents an exclusive set of over 1500 unique mouse models across a vast array of research areas. Breeding colonies provide mice for both large and small orders and fluctuate in size depending on current demand for each strain. If a Repository strain is not immediately available, then within 2 to 3 business days, you will receive an estimated availability timeframe for your inquiry or order along with various delivery options. Repository strains typically are delivered at 4 to 8 weeks of age and will not exceed 12 weeks of age on the day of shipping. We will note and try to accommodate requests for specific ages of Repository strains but cannot guarantee provision of these strains at specific ages. However, if cohorts of mice (5 or more of one gender) are needed at a specific age range for experiments, please let us know.

Control Information

  Control
   101045 B6129SF2/J (approximate)
 
  Considerations for Choosing Controls
  Control Pricing Information for Genetically Engineered Mutant Strains.
 

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