[Rat liver mitochondrial DNA treated with 1,2-dimethylhydrazine]

Primary structure of 5'-end 16S RNA gene of mitochondrial DNA (mDNA) isolated from rat liver tissue within 20 hrs after treatment with 1,2-dimethyl hydrazine, was analyzed. The preparations studied did not contain mutations induced by the drug. The region of mDNA analyzed appears not to be a preferential target for mutagenic effect of 1,2-dimethyl hydrazine unber these experimental conditions.