【摘要】 将实验动物（家兔）饲养于低浓度焦炉逸散物污染的环境中（现场Ｂ（ａ）Ｐ浓度２～１０μｇ／１００ｍ￣３），动态观察染毒前、现场染毒二周、四周及脱离现场一周外周血淋巴细胞姐妹染色单体交换（ＳＥｃ）率和微核（ＭＮ）率的变化。结果显示，高ＳＣＥ细胞（ＨＦＣ）率在第二周即增高，到第四周ＳＣＥ率均值也明显升高，但在脱离污染环境一周后可恢复到染毒前水平。ＭＮ率未显示变化。更多还原

【Abstract】 Rabbits were bred in the field with light pollution of coke oven emissions (the concentration of B(a)P in the area was about 2-10μg/l00m3).The SCE rate and MN frequency in peripheral lymphocytes were measured before exposure, in two and four weeks after exposure starting and one week after escaping from the field respectively.The results showed that the frequencies of cells with high SCE frequencies(HFC)increased in two weeks and the mean SCE rate also increased in four weeks, but returned to original level one week after escaping from the field. The frequencies of MN in four weeks did not differ from original level.更多还原