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目的探讨苯并(a)芘(Benzo[a]pyrene,B[a]P)作用下人支气管上皮细胞(16HBE)DNA损伤与着色性干皮病F、G蛋白[Xeroderma pigmentosum group F,G(XPF,XPG)]和切除修复交叉互补蛋白1(Excision repair cross-complementing 1,ERCC1)表达的关系。方法用B[a]P(0,1,2,4,8,16,32,64μmol/L)染毒16HBE细胞24h,用噻唑蓝(Methylthiazoletetrazolium,MTT)法