摘要： Serum IgG,lgA,IgM levels of 91 patients with alveolar echinococcosis and 83 patients withcystic echinococcosis were compared with the mean levels of 104 healthy adults by single radial im-muno-diffusion.The mean IgG,IgA,IgM concentration in patients with alveolar echinococcosis andthe mean IgG,IgM levels in patients with cystic echinococcosis were found to be significantly higherthan those in the normal adults.