The total cumulative dose for each groupwas 2.0 Gy. It was found that the types of chromosome aberrations were mainly dicentric abe-rrations and acentric fragments in single acute irradiation.

• 慢性连续照射以0.；26 mGy/min的剂量率；每天照射190分钟；每周连续照射5天；总累积剂量均为2