[Ultraviolet fluorescence of irradiated cultured cells].

Using cytofluorometry in the UV region of spectrum, a dose-dependent increase in ultra-violet fluorescence (UVF) intensity of L-fibroblasts was shown after X-irradiation at dose range of 80 to 500 rad, with maximum effect at 400 rad. The time dynamic observation of fluorescence intensity changes after irradiation at does 400 rad has demonstrated the highest values of UVF on the first days (1--3 days) with the following decrease within a month, and returning to the control level by the end of the study.