In this strain, the targeted mutation replaces exon 5 and part of exon 6 of the c-abl concogene 1, non-receptor tyrosine kinase gene, Abl1 with a neomycin resistance (neo) cassette, abolishing gene function. Mice heterozygous for this allele are viable, fertile, and normal in size. Homozygous c-Abl2 mice exhibit no abnormal phenotype before birth. After birth 95% of all homozygotes become runted and 85% develop lymphopenia. During the first week of age fatty vacuoles are evident in hepatocytes and some hepatic degeneration is evident. Spleens are severely atrophied, as are thymuses which show a severe deficiency in thymocytes. The few remaining thymocytes are only single positive CD4 or CD8 T cells. During the first 3 weeks of life 7% of the homozygotes are runted and died and 6% disappear, leaving approximately 7% of homozygous mutants. The few that survived to 3 or 4 months of age exhibited megaesophagus, anal prolapsed, aspiration pneumonia, and signs of infection in the nasal passages and ears. Mutants weighing 50% of the weight of controls had 50% fewer bone marrow cells, whereas mutant thymocytes decreased 20- to 500-fold in number. These mice may be useful for studying cell proliferation, survival and migration, as well as lymphopoesis and hematopoiesis.

In this strain, the targeted mutation replaces exon 5 and part of exon 6 of the c-abl concogene 1, non-receptor tyrosine kinase gene, Abl1 with a neomycin resistance (neo) cassette, abolishing gene function. These mice may be useful for studying cell proliferation, survival and migration, as well as lymphopoesis and hematopoiesis.

Typically mice are recovered in 12-16 weeks. Contact Customer Service to place an order or for more information.

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