A Transplantable Induced Melanotic Tumor of the Syrian Golden Hamster^*

Melanotic tumors induced in Syrian golden hamsters by means of 9,10-dimethyl-1,2-benzanthracene applied directly to the skin were successfully transplanted to homologous animals. The transplants resembled the originally induced lesions but showed a more pronounced and more irregular cellular proliferation. After transplantation, the tumor cells retained their ability to produce large amounts of both melanin and fibrillar reticulum.