Brown R J, Smith A W, Keyes M C
J Wildl Dis. 1975 Jan;11(1):23-5. doi: 10.7589/0090-3558-11.1.23.
A 2-week-old northern fur seal female pup (Callorhinus ursinus) found dead in the Pribilof Islands had an irregular mass at the anterior pole of the right kidney. Histopathological examination revealed a fibrosarcoma.
在普里比洛夫群岛发现的一只2周大的北太平洋海狗雌性幼崽（海狗属）死亡，其右肾前极有一个不规则肿块。组织病理学检查显示为纤维肉瘤。
