the frequencies of sister chromatid exchange ( 5.4 versus 5.6 sce/cell ) , and chromosome damage type gaps ( 6.6 versus 7.1 % ) and breaks ( 1.9 versus 1.9 % ) were not different in the two groups , but exchange type aberrations were more frequent in the patients ( 0.9 versus 0.06 % ) .
C0037211
sister
C0007634
cell