Type | MGI:General | Description | gamma irradiated homozygotes exhibit premature hair greying and hair loss, and an increased rate of tumor formation at 22 weeks after irradiation, all homozygotes exhibit hair greying while 30% also show large areas of hair loss on the back or around neck and mouth (not found in any wild-type) at 7 months after irradiation, all mutant males display teratomas (not found in any wild-type) at 16 months after irradiation, all mutants with malignant lymphomas display severe morbidity |