Methods: To weight immune organs, detect macrophage phagocytosis and hemolysin antibody production, lymphocyte transfermation and MTT.

• 方法：采用免疫重量法计算脾脏和胸腺指数、巨噬细胞测定法及溶血素测定法、淋巴细胞转化实验、MTT法测定。