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用Till和McCulloch(1961)的方法,能定量地测定小鼠的多能造血干细胞(CFUs)。一种方法是移植少量骨髓或脾细胞进入超致死剂量照射的受体鼠,8～10天以后计数脾脏内的集落数(外源性-CFUs)。另一种方法追查亚致死剂量照射
Mouse pluripotent hematopoietic stem cells (CFUs) can be quantitated using the method of Till and McCulloch (1961). One approach is to transplant a small amount of bone marrow or spleen cells into a sublethally irradiated recipient rat and count the number of spleens (exogenous -CFUs) 8 to 10 days later. Another way to track sub-lethal dose exposure