in an attempt to evaluate the cytotoxic potential of these lesions in human cells we have measured : ( 1 ) cell cycle delay and cell killing by cpt in primary and transformed fibroblasts , and in lymphoblastoid lines derived from normal , x-ray sensitive ataxia-telangiectasia ( a-t ) and xeroderma pigmentosum ( xp ) donors ;
C0007634
cell
C0016030
fibroblasts