Objective: The aim of this research was to obtain the distribution of genotypes frequencies and the allelic frequencies of DNA repair gene X-rag repair cross-complementing groups 3(XRCC3) Thr241Met of the Han population in Sichuan.

• 目的:研究DNA修复基因X线修复交叉互补基因3(XRCC3)Thr241Met位点多态性在四川汉族人群的分布,并与其它种族比较其分布特点。