an established cell line of chinese hamster ovary ( cho-9 ) cells and its uv-sensitive mutant 43-3b have been studied for the induction of cell killing , chromosomal aberrations and sister-chromatid exchanges ( sces ) after exposure to different types of dna-damaging agents such as 4-nitroquinoline-1-oxide ( 4nqo ) , mitomycin c ( mmc ) , diepoxybutane ( deb ) , methyl methanesulfonate ( mms ) , ethyl methanesulfonate ( ems ) and ethyl nitrosourea ( enu ) .
C0007634
cell
C0037211
sister-chromatid exchanges