High frequency of c-K-ras activation in 3-methylcholanthrene-induced mouse thymomas

Abstract
Thymic lymphomas were induced in RJF mice by percutaneous application of 3-methykholanthrene (MCA). DNAs from 83% of the tumors analyzed contained a transforming c-K-ras gene. The high frequency of c-K- ras oncogene activation in response to MCA seems to favor the concept that the activation of c-K- ras is related to the specificity of the mutagenic effect of MCA.