[Genetic activity of 1,2-dichloroethylene. B). In vivo studies: effect on microsomal enzymes].

Mutagenicity study "in vivo" (Intravenous host mediated assay) confirms suspension test results with cis- and trans -1,2-dichloroethylene: no genetic effects could be detected. Single and repeated doses of trans-1,2-DCE induced liver aminopyrine demethylase and cytochrome P-450 whereas the cis- isomer decreased them. Similar results were obtained after induction with phenobarbital + beta-Naphthoflavone.