[The effect of cysteamine on x-ray induction of mutations resulting in resistance to 8-azaguanine in Chinese hamster cells in vitro].

The survival of Chinese hamster cell was increased after the administration of cisteamine (at doses of 1,25; 2,5 and 5,0 mM/ml) in the culture for 15--20 min. before X-irradiation (600r). In the same experiment the protector decreased the rate of induced Ag-resistance gene mutations.