[Early changes in the lymphocyte surface membrane of rats after whole-body irradiation with neutrons and gamma rays].

Biochemical changes in lymphocyte plasma membranes were studied 3 and 18 h after whole-body exposure of rats to neutrons and gamma-rays at doses from 2 to 6 Gy. It was shown that fast neutrons, with an average energy of 1.5-2.0 MeV, increased the rate of lipid peroxidation more markedly than gamma-rays did. In addition, there was an increase in the number of free aminogroups on the thymocyte surface. Dose- and time-dependent parameters of changes in the aminogroup content on the cellular surface were quantitatively different after the effect of radiation with different LET.