为了解放置冰箱中（4C）保存10年的血吸虫旧平卵抗原性能消失情况，我们用感染血吸虫兔血清和急性血吸虫病入血清（以下称意感病人血清）盲法做环卵沉淀试验（COPT），与新鲜于卵对比观察，结果表明旧于印抗原性能仍很好，现报告如下：1材料和方法1．1材料新、旧血吸虫子如抗原 In order to understand the disappearance of the antigen of anti-Schistosoma japonicum antigen stored in refrigerator (4C) for 10 years, we used the blind method of sera from rabbits infected with Schistosoma japonicum and acute schistosomiasis to serum (hereinafter referred to as sense-patient serum) ), Compared with the fresh eggs observed, the results show that the old Indian antigen is still very good performance, are reported as follows: 1 Materials and methods 1.1 Materials New, old sperm worms such as antigens