the effect of exposure to uv irradiation or to the n-acetoxy-ester derivatives of four carcinogenic aromatic amides , 4-acetylaminobiphenyl ( aabp ) , 2-acetylaminofluorene ( aaf ) , 2-acetylaminophenanthrene , and 4-acetylaminostilbene , on cell survival was compared in strains of cultured human fibroblasts possessing normal rates of excision repair of dna and in three strains of xeroderma pigmentosum ( xp ) cells , each differing in its rate of excision repair .
C0007620
cell survival
C0007634
cells