Abstract Purpose: To compare natural micronucleus frequencies in polychromatic erythrocytes (fMPCE) from normal Kunming mouse chest bone marrow to that from normal NIH strain.

• 摘要 目的： 比较正常昆明种与NIH种小鼠胸骨骨髓嗜多染红细胞微核的自然发生率。