作者报导了杭州地区50名健康成人外周血淋巴细胞微核检出率。受检者中男性33人,女性17人,年龄23～45岁(平均32岁),即往均无毒物接触史。50名健康人的检查结果,有39人未检出微核(占78%);微核率在0.5‰者有8人(占16%);1‰者有3人(占6.0%)。微核率平均为0.14‰。用百分位数法统计结果, The authors reported the detection rate of peripheral blood lymphocytes micronuclei in 50 healthy adults in Hangzhou. Subjects, 33 males and 17 females, aged 23 to 45 years (mean 32 years), that is, no history of exposure to toxic. Of the 50 healthy subjects, 39 were not detected with micronuclei (78%); 8 with micronuclei (0.5%) (16%) and 3 with 1% (6.0%). The average micronucleus rate was 0.14 ‰. Using the method of percentile statistics,