[Effect of preliminary chronic irradiation and alpha-tocopherol on the frequency of chromosome aberrations in mouse bone marrow cells, induced by exposure to acute gamma-irradiation].

The incidence of chromosome aberrations in bone marrow cells of femur did not exceed the spontaneous one in CBA mice exposed, during 70 days, to gamma-radiation at dose--rates of 33.7-35.8 nA/kg and cumulative dose of 2.