本文观察了混输不同剂量离体照射的骨髓基质祖对细胞受致死剂量照射小鼠造血重建的作用。给果发现,混输离体照射强化基质细胞者在骨髓细胞数、CFU—S含量和幼粒细胞分类等指标上,均较单输注骨髓细胞或未照射基质细胞者明显提高。最佳照射剂量为10Gy。并结合以前本室工作讨论了其作用机理。 In this paper, we observed the effect of different doses of bone marrow stromal progenitor cells irradiated in vitro on the hematopoietic reconstitution of mice exposed to lethal doses. Found to fruit, mixed translucent irradiation of stromal cells in bone marrow cells count, CFU-S content and promyelocytic cell classification and other indicators were significantly higher than single-infusion bone marrow cells or non-irradiated stromal cells were significantly increased. The best exposure dose of 10Gy. And combined with the previous work room to discuss its mechanism.