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Phenotypes associated with this allele
Allele Symbol
Allele Name
Allele ID
Cyp26b1tm1.1Ptk
targeted mutation 1.1, Martin Petkovich
MGI:3764694
Summary 1 genotype
Jump to Allelic Composition Genetic Background Genotype ID
hm1
Cyp26b1tm1.1Ptk/Cyp26b1tm1.1Ptk involves: 129S2/SvPas MGI:3764932


Genotype
MGI:3764932
hm1
Allelic
Composition
Cyp26b1tm1.1Ptk/Cyp26b1tm1.1Ptk
Genetic
Background
involves: 129S2/SvPas
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Cyp26b1tm1.1Ptk mutation (0 available); any Cyp26b1 mutation (35 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
mortality/aging
• homozygous offspring were born at the expected mendelian ratio but died within hours of birth due most likely to respiratory distress

respiratory system

limbs/digits/tail
• truncated limbs

craniofacial
• severe craniofacial abnormalities

endocrine/exocrine glands
• testes of homozygous neonates were significantly smaller than wild-type

reproductive system
• virtually no germ cells were found in homozygous mice testes
• normal number of germ cells were found in ovaries of homozygous mutant neonates
• at E12.5 mutant testes were indistinguishable from wild-type
• at E13.5, some germ cells exhibited dark condensed nuclei, typical of apoptotic cells
• at E14.5, some germ cells in mutant testes appeared to be apoptotic, whereas others appeared to be in the zygotene stage of meiosis
• at all stages examined mutant testes had significantly more TUNEL positive cells within the testis cords
• non-apoptotic germ cells in mutant testes contains cells in zygotene stage at E14.5 and in pachytene stage by E16.5 indicating that the germ cells enter meiosis
• immunohistochemical staining suggest that Sertoli and Leydig cells develop normally in mutant testes
• testes of homozygous neonates were significantly smaller than wild-type

cellular
• virtually no germ cells were found in homozygous mice testes
• normal number of germ cells were found in ovaries of homozygous mutant neonates
• at E12.5 mutant testes were indistinguishable from wild-type
• at E13.5, some germ cells exhibited dark condensed nuclei, typical of apoptotic cells
• at E14.5, some germ cells in mutant testes appeared to be apoptotic, whereas others appeared to be in the zygotene stage of meiosis
• at all stages examined mutant testes had significantly more TUNEL positive cells within the testis cords
• non-apoptotic germ cells in mutant testes contains cells in zygotene stage at E14.5 and in pachytene stage by E16.5 indicating that the germ cells enter meiosis
• immunohistochemical staining suggest that Sertoli and Leydig cells develop normally in mutant testes





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last database update
12/10/2024
MGI 6.24
The Jackson Laboratory