[Susceptibility to damage of human lymphocyte chromosomes in different stages of the mitotic cycle when exposed to fast neutrons with an average energy of 6 MeV].

Cytogenetic susceptibility of human lymphocytes in the culture to lesion is studied under the effect of neutrons with 6 MeV energy at different stages of the mitotic cycle. Radiosensitivity of human lymphocytes under the influence of gamma-quanta and neutrons is found to vary identically during the whole cycle. These variations are less expressed in the case of neutron irradiation. The data allow concluding that the repair system functions most actively at the S stage in case of both types of radiation.