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Phenotypes Associated with This Genotype
Genotype
MGI:3603924
Allelic
Composition
Pax1un-i/Pax1+
Genetic
Background
either: (involves: 129S1/Sv * 129X1/SvJ) or (involves: 129S1/Sv * 129X1/SvJ * C57BL/6J)
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Pax1un-i mutation (0 available); any Pax1 mutation (27 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
immune system
• at E17.5, E19.5 and 6 weeks of age, thymocyte numbers are significantly reduced compared to wild-type mice but increased compared to homozygous mutants
• the number of CD4+ cells is decreased at 6 weeks of age compared to wild-type mice but increased compared to homozygous mutants
• the number of CD8+ cells is decreased at 6 weeks of age compared to wild-type mice but increased compared to homozygous mutants

hematopoietic system
• at E17.5, E19.5 and 6 weeks of age, thymocyte numbers are significantly reduced compared to wild-type mice but increased compared to homozygous mutants
• the number of CD4+ cells is decreased at 6 weeks of age compared to wild-type mice but increased compared to homozygous mutants
• the number of CD8+ cells is decreased at 6 weeks of age compared to wild-type mice but increased compared to homozygous mutants

endocrine/exocrine glands
• at E17.5, E19.5 and 6 weeks of age, thymocyte numbers are significantly reduced compared to wild-type mice but increased compared to homozygous mutants


Contributing Projects:
Mouse Genome Database (MGD), Gene Expression Database (GXD), Mouse Models of Human Cancer database (MMHCdb) (formerly Mouse Tumor Biology (MTB)), Gene Ontology (GO)
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last database update
03/31/2026
MGI 6.24
The Jackson Laboratory