Objective To investigate the injury effects of gamma-radiation on the proliferation and viability of cerebellar neurons grown in culture.Methods Primary cell culture were exposed to 0.25 ~2.0 Gy doses of γ-radiation 2h after plating.The proliferation and survival viability of neurons were examined for 3 H-TdR incorporation and MTT assay. Results After exposed to 0.25Gy dose γ-rays,neurons proliferation was significantly inhibited;cell survival viablity was decredsed;and the magnitude of injury ef...