本文以小白鼠为实验动物,综述了造血组织移植在放射损伤中的疗效、作用机制及晚期死亡三个问题。当机体受中等致死量或超致死量全身照射后,必将引起急性放射损伤和造血器官的严重衰竭,近年来,已有很多实验证明,全身照射后输注骨髓或脾脏等造血组织,可以改善受照射机体的造血情况,明显提高动物的存活率。其疗效的高低与实验动物种系、细胞输注方式和照射剂量等因素密切有关。对于造血细胞输入的作用机制,尚有很多争论;早期的研究主张体液刺激说,认为注入的细胞能释放某种体 In this paper, mice were used as experimental animals. The effects of hematopoietic tissue transplantation on radiation injury, mechanism of action and late death were summarized. When the body is exposed to moderate-to-lethal or ultra-lethal doses, it is bound to cause acute radiation damage and severe failure of hematopoietic organs. In recent years, many experiments have shown that hematopoietic tissues such as bone marrow or spleen can be improved after whole body irradiation. The hematopoietic condition of the irradiated body significantly improves the survival rate of the animal. The level of efficacy is closely related to factors such as experimental animal germline, cell infusion method and radiation dose. There is still much debate about the mechanism of hematopoietic cell input; earlier studies have argued for humoral stimulation, suggesting that injected cells can release a body