the cell killing and induction of sister-chromatid exchanges ( sces ) by x-rays and short-wave ultraviolet ( uv ) irradiation in combination with inhibitors of dna repair , 3-aminobenzamide ( 3ab ) , cytosine arabinoside ( ara-c ) or aphidicolin ( apc ) were studied in wild-type cho-k1 and two x-ray-sensitive mutants , xrs 5 and xrs 6 cells .
C0037211
sister-chromatid exchanges
C0007634
cells