[Proliferation kinetic examinations on an experimental renal tumour with high portion of hypoxic tumour cells (author's transl)].

By autoradiographic examination by means of pulse labelling with 3H-thymidine cell cycle times were determined in solid Ehrlich carcinomas (early carcinomas) in order to obtain comparative values for irradiated tumours. The subcells of the initially labelled cells near the capillaries were found to distribute themselves in the course of 48 h over the whole tumour and to emigrate to hypoxic tumour areas.