Martin G M, Smith A C, Ketterer D J, Ogburn C E, Disteche C M
Isr J Med Sci. 1985 Mar;21(3):296-301.
Chromosomal aberrations were scored in the first metaphases of cells isolated from the kidneys of young (8 months old) and aged (40 months old) CB6F1 mice. There was a sixfold increase in the frequency of such aberrations in metaphases from old mice as compared with young mice.
对从年轻（8个月大）和年老（40个月大）的CB6F1小鼠肾脏中分离出的细胞的第一次中期染色体畸变进行了评分。与年轻小鼠相比，年老小鼠中期此类畸变的频率增加了六倍。
