[Changes in the ultraviolet fluorescence and the size of Ehrlich ascites carcinoma cells in the 1st hours after X-ray irradiation].

Using the Ehrlich ascite carcinoma cells, a decrease in ultraviolet fluorescence (UVF) was demonstrated one hour following a 10 Gy X-irradiation, and an increase in UVF 5 hours following the same irradiation. The same changes were demonstrated for cell turbidity. Association between the optical changes and those in cell radius and membrane protein state is discussed.