The occurrence of a spontaneous melanoma in the hamster and its behavior on transplantation have been described. Significant features observed during the course of study were the occurrence of amelanotic derivatives and a proclivity for sarcomatous transformation.
↵* This investigation has been supported by grants from The Jane Coffin Childs Memorial Fund, the American Cancer Society, and the United States Public Health Service, National Institutes of Health.
- Received November 15, 1957.
- ©1958 American Association for Cancer Research.