the ability of normal diploid human fibroblasts and excision repair-deficient xeroderma pigmentosum cells ( xp12be , complementation group a ) to excise potentially cytotoxic or mutagenic lesions induced in dna by ( +/- ) -7 beta , 8 alpha-dihydroxy-9 alpha , 10 alpha-epoxy-7,8,9,10-tetrahydrobenzo [ a ] pyrene ( bzap-diol epoxide ) was determined .
C0016030
fibroblasts
C0007634
cells