[Modification of the effect of fast neutrons in an experiment and in radiation practice].

The data are obtained indicating that it is possible to increase the cytogenetic effects of 6 MeV neutrons by the additional effect of hyperthermia and caffeine. A combination of gamma rays and neutrons produced a superadditive effect, in estimating the level of chromosome aberrations in human lymphocytes, and in radiation practice when estimating the degree of tumor regression. It is suggested that a different mechanism is involved in the formation of chromosome aberrations after the combined effect of gamma and neutron radiation.