[Measurement of the number of single-strand breaks in DNA of irradiated leukemia P-388 using alkaline denaturation].

Methods, used for indirect determination of single-thread breaks' quantity in DNA, based on it's denaturation in alkali medium and further determination of double-thread DNA quantity by it's fluorescence has been adapted to the measuring of thread disturbances on leukemia P-388 cells. Influence of cells' and alkali concentrations and the time of denaturation of quantity of double-thread DNA has been investigated.