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challenge strain中文是什么意思

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  • The result further proposed that different genotypes of ndv had not directed the antigenic changes of f protein , the most important protein of ndv in the protective immune response of the fowls . protective efficacy difference among various genotype ndv vaccines of different origin was studied . except the vaccine strain lasota ( genotype ii ) , the challenge strain f48e8 in china , the ndv strains tested were isolated from nd outbreaks in chickens , gooses , and pigeons
    通过不同来源不同基因型(亚型) ndv灭活苗与常规疫苗(包括lasota弱毒活疫苗和灭活疫苗)的免疫保护效力的比较,证实了所有疫苗均能激发机体产生抗不同基因型ndv的抵抗力, hl抗体变化都具有一个抗体滴度迅速上升的过程,动态特征除lasota弱毒活疫苗组有些不同外相当一致。
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Last modified time:Sun, 10 Aug 2025 00:29:56 GMT

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