we report here that in gamma-irradiated normal human cells , aphidicolin ( at 5 micrograms/ml and less ) had no significant effect on the rate of the rejoining of dna single strand breaks or rate of removal of dna lesions assayed as sites sensitive to incising activities present in crude protein extracts of micrococcus luteus cells . gamma-irradiated human ataxia telangiectasia cells are known to demonstrate enhanced cell killing and exhibit resistance to the inhibiting effects of radiation on dna synthesis .
C0012854
dna
C0598312
dna synthesis