The influence of different doses of the platinum derivative Pt-DNA-III on t
he survival of cultured cells obtained from brain tumors of 13 operated pat
ients was investigated. The treatment of cell cultures for 24 h with Pt-DNA
-III at the increasing doses from 7.5 to 30 Mg/ml resulted in. the monotono
us decrease of the cell survival. At the highest dose of the drug the inhib
ition of cell reproduction (70-90%) was observed.