Aim:To explore the micronuleus rate of Yuyi hairless mouse(YYHL) and Kunming mouse bone marrow polychromatic erythroblasts( PCE ) by cyclophosphamide(CP) and coal tral.

• 目的:探讨豫医无毛小鼠(YYHL)及昆明小鼠骨髓嗜多染红细胞自发微核率及化学诱变剂对其微核形成的影响。