目的改构高致病性禽流感病毒血凝素基因，建立有效的原核表达体系。
Objective To modify the HA1 gene of high pathogenic avian influenza virus (HPAIV) and to build an efficient prokaryotic expression system of it.
阐明2006年四川省流行的B型流感病毒血凝素抗原性及其基因变异情况。
To identify the antigenic characteristics and genetic variations of hemagglutinin genes from Influenza B virus, which circulated in Sichuan Province in 2006.
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