Enhancement of micronuclei frequency by vindesine in mouse bone marrow.

Treatment of mice with various doses (0, 0.25, 0.5, 1.0 and 2.0 mg/kg b.wt.) of vindesine resulted in a dose-dependent increase in the frequency of micronucleated polychromatic erythrocytes (MPCE) and micronucleated normochromatic erythrocytes. Conversely, the polychromatic erythrocyte and normochromatic erythrocyte (P/N ratio) ratio declined with increasing dose of vindesine. The dose effect relationship for MPCE, MNCE and P/N ratio was linear quadratic.