• 论文 •

60Co事故受照人员远期细胞遗传学效应观察

1. 河南省职业病防治研究所,河南郑州450052 Henan Institute of Occupational Disease,Zhengzhou450052,China
• 收稿日期:1900-01-01 出版日期:1999-08-10 发布日期:1999-08-10

Late Observation of Cytogenetics in Three Cases Exposed to 60Co Radiation Accident

• Received:1900-01-01 Online:1999-08-10 Published:1999-08-10

Abstract：　The analyses of chromosome aberrations and micronuclei in peripheral blood lymphocyte were performed in 3 cases exposed to 60Co radiation accident in 6(7) years and 11(12) years after irradiation. The results show that the frequencies of chromosome aberrations in exposed cases were 4.29% in 6(7) years and 3.63% in 11(12) years after irradiation, respectively, and the difference was not significant in the two times follow-up study. Most of the chromosome aberrations were acentric and dicentric chromosomes in first time follow-up study, and translocation, deletion and inversion chromosomes in second time follow-up one. The frequencies of micronuclei in exposed group were 4.17‰ and 1.17‰ in the two times follow-up study, respectively, and the rates of micronuclei in second time follow-up study were much lower than that in first one. The results indicated that the unstable type aberrations were gradually lost as time goes on ,and the level of stable type aberration was of high degree.