（二）琼脂扩散沉淀试验 琼脂扩散沉淀试验（Agar gel precipitation test，AGPT）是沉淀反应的一种形式。物质 自由运动形成扩散现象，扩散可以在各种介质中进行。
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琼脂凝胶扩散沉淀试验 a dig ; agar gel diffusion precipitation
结果：自制兔抗羊免疫血清和羊血清经环状沉淀、琼脂扩散多种沉淀反应试验，验证均与兔抗人血清和人血清的反应结果相近。
Because it has shown a pleased result in many kinds of precipitation reaction such as ring precipitation reaction, AGAR diffusion reaction and so on.
同时与琼脂扩散免疫沉淀试验及ELISA试验进行了比较，结果显示，该方法的敏感性优于琼脂扩散免疫沉淀试验，而与ELISA试验相当。
And compared with the AGAR immunodiffusion test and the ELISA, it sh owed that the new method was more sensitive than the AIDT and equal as ELISA.
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