8Wusnou PC,Tsai MS, Hwang JS, et al. Follow up in the micronucleus frequencies and its subsets in human population With chronic low dose Y irradiation exposure. Mutat Res, 1999,428:99- 105.
9Heddle A. A rapid in vivo test for chromosomal damage. Murat Res, 1973,18 : 187 - 190.
10Schmid W. The micronucleus test. Mutat Res, 1975,31:9 - 15.
