Melanotic tumors resembling cellular blue nevi of man were induced in the Syrian white hamster by single and multiple applications of 7,1~-dimethylbenz[a]anthracene (DMBA). Histologically they resembled the melanotic tumors produced under similar experimental conditions in the Syrian golden hamster. They showed great variations in pigment content from almost nonpigmented to heavily pigmented tu...

Previous results have shown that when compared to male Syrian hamsters, female Syrian hamsters have a distinct predisposition to acquire amyloidosis either normally with aging or experimentally with sodium caseinate or diethylstilbestrol (DES) treatments. In the present study, we tested the influence of testosterone on expression of amyloid to determine if this hormone was solely responsible fo...