[Evaluation of the antigenic structural changes in the rat liver after a single carcinogenic exposure]

A single injection of hepatocarcinogen (4-dimethylaminoazobenzene) to rats resulted in antigenic rearrangement in rat liver, typical of hepatocellular tumors, whereas the treatment with a non-carcinogen isomere (4-diethylaminoazobenzene) did not have the same effect. It is assumed that antigenic rearrangement in hepatocytes caused by 4-dimethylaminoazobenzene might be due to its carcinogenity.