属于电离辐射的60 Ｃｏγ 射线的损伤效应早已被证实 ,但主要集中在对人体正常细胞或实体瘤细胞的影响方面 ,而有关γ 射线对人白血病细胞的损伤效应 ,特别是细微分子水平损伤及其生物化学进程还了解得较少。次黄嘌呤鸟嘌呤磷酸核糖基转移酶 (Ｈｙｐｏｘａｎｔｈｉｎｅ ｇｕａ The damage effects of 60Coγ-rays belonging to ionizing radiation have long been confirmed, but mainly focused on the effects on human normal cells or solid tumor cells. However, the damage effect of γ-rays on human leukemia cells, especially on the level of fine molecules, The biochemical process is also less understood. Hypoxanthine gua. Hypoxanthine guanine phosphoribosyltransferase (Hypoxanthine gua