Genetic variation of the hemagglutinin o
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Xiao-feng Song; Ping Han; Yi-Ping Phoebe Chen
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Article
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2011
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John Wiley and Sons
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English
β 157 KB
## Abstract Avian influenza virus H9N2 has become the dominant subtype of influenza which is endemic in poultry. The hemagglutinin, one of eight proteinβcoding genes, plays an important role during the early stage of infection. The adaptive evolution and the positively selected sites of the HA (the