No abstract available
Publication types
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Research Support, N.I.H., Extramural
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Research Support, Non-U.S. Gov't
MeSH terms
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Animals
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Evolution, Molecular
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Genotype*
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Hong Kong / epidemiology
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Influenza A Virus, H9N2 Subtype / classification*
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Influenza A Virus, H9N2 Subtype / genetics*
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Influenza A Virus, H9N2 Subtype / isolation & purification
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Influenza in Birds / epidemiology*
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Influenza in Birds / genetics
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Membrane Proteins / genetics
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Phylogeny
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Population Surveillance
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Poultry / virology*
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Reassortant Viruses