| Type | MGI:General | Description | mammary tumors occur after long latency of at least 13 months of age T50 for tumor-free survival is approximately 17 months of age at the end of the 20 month observation period, 20 of 26 animals developed mammary tumors; control animals developed none tumor pathology corresponded to two characteristic types, solid carcinoma and adenoacanthoma, with a mixture of the two types frequently appearing in the same tumor mass |
