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[Thymidine transport and its incorporation into the cellular DNA of Ehrlich ascites cancer and Zajdela's ascitic hepatoma in the presence of thiophosphamide and thiophosphamide-modified DNA].

Antitumour agents, thiotepa and alkylated DNA, inhibit the transport of thymidine in the cells within the first minutes of incubation. Penetration of the exogenous DNA in the Ehrlich ascites tumour cells and stimulation of this process with dimethylsulfoxide are shown. The possible mechanism of the antitumour effect of alkylated DNA is discussed.