每轮随机挑取蓝色噬菌斑各21个，用ELISA方法检测其抗原性，并对其反应性较好的阳性克隆进行测序。
After two rounds of panning, 21 positive plaques were selected each round at random respectively. ELISA assay was used to examine the immunocompetence of each clone.
每轮随机挑取蓝色噬菌斑各21个，用ELISA方法检测其抗原性，并对其反应性较好的阳性克隆进行测序。
After two rounds of panning, 21 positive plaques were selected each round at random respectively. ELISA assay was used to examine the immunocompetence of each clone.
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