[Cytogenetic study of the mutagenic properties of the repellents dimethyl phthalate and phenoxyacetic acid N,N-diethylamide].

Animal experiments ascertained that the repellent N,N-diethylamide of phenoxyacetic acid (P-203) increases the frequency of chromosomal aberration in the bone marrow cells of mice following its intraperitoneal introduction and also in the cells of a regenerating liver of rats after its repeated skin application. Dimethylphthalate displayed a mutagenic action only with respect to the rats' hepatocytes when applied repeatedly to the skin.