Abstract

The carcinogen 4,4'-diaminobiphenyl (benzidine) has been compared in vitro with its terphenyl analogue 4,4''-diaminoterphenyl using the Salmonella reverse mutation assay and the BHK cell-transformation assay. The responses observed, taken together with a consideration of chemical structures, indicate that the terphenyl compound is a potential carcinogen. These findings may contribute to an understanding of the mechanism of action of benzidine as a carcinogen.

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