分别用sc环磷酰胺及~(40)Coγ线一次性全身照射方法造成小鼠免疫功能低下的动物模型,观察口服胸腺素对小鼠外周血白细胞数及免疫功能的影响。结果表明,小鼠连续口服胸腺素7d后,外周血白细胞数有明显的上升,对受大剂量照射的小鼠可提高30％～50％存活率,并对小鼠血清溶血素、抗体形成细胞、小鼠腹腔巨噬细胞吞噬鸡红细胞及~3H-TdR掺入等几个免疫学指标均有明显的提高。 The immunosuppressive mice model was induced by systemic systemic irradiation with sc-cyclophosphamide and ~ (40) Coγ-ray, respectively. The effects of oral thymosin on the number of peripheral blood leukocytes and immune function in mice were observed. The results showed that the number of white blood cells in peripheral blood of mice was significantly increased after 7 days of continuous administration of thymosin, and the survival rate of mice exposed to high dose of irradiation increased 30% ~ 50%, and the serum hemolysin, antibody-forming cells , Mouse peritoneal macrophages engulf chicken erythrocytes and ~ 3H-TdR incorporation and several other immunological indicators were significantly improved.