Ovarian teratoma in a rasH2® (wild type) mouse

STP 2025 -- Here we report a case of spontaneous benign (mature) ovarian teratoma in a rasH2® (Human HRAS [Harvey Rat sarcoma virus] transgene) wild type mouse. Spontaneous ovarian teratoma development in mice is rare, and an ovarian teratoma has not been previously reported in rasH2 (wild type) mice.