[Postirradiation change in the radiosensitivity of rats in relation to the preliminary radiation dose in the cutaneous form of radiation injury].

The experimental animals were exposed two times to soft 17kV X-radiation. Post-irradiation changes in radiosensitivity were shown to depend upon dose of preliminary irradiation (10, 18 and 25 Gy). The state of radiosensitive tissues was studied and a comparison was made of a residual damage curve with a change in the proliferative activity of dividing tissue elements during 30 days after irradiation.