The induction of the initiating phase of skin carcinogenesis in the mouse by oral administration of 9:10-dimethyl-1:2-benzanthracene, 20-methyl-cholanthrene, 3:4-benspyrene, and 1:2:5:6-dibenzanthracene

口服9:10-二甲基-1:2-苯并蒽、20-甲基胆蒽、3:4-苯并芘和1:2:5:6-二苯并蒽可诱导小鼠皮肤癌发生的起始阶段。