目的：对研制的一种新灭蜚蠊毒饵配方进行毒效观察。
Objective:To study a new bait formulation for killing cockroach.
攻毒保护试验的结果显示，ELISA抗体效价与机体的保护力表现一定程度的相关性。
Subsequently, experiment on chickens challenged with virulent NDV strain showed that protection seems to be correlated with the ELISA antibody titer.
以血清交叉中和方法进行鸡传染性支气管炎双价活疫苗效力检验，结果与攻毒方法效检结果一致。
Efficacy test of chicken infection bronchitis bivalent living vaccine was taken with the method of serum cross neutralization. The results showed that it was consistent with that of challenge method.
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