Name : Influenza A H5N9 (A/chicken/Italy/22A/1998) Hemagglutinin / HA Protein (His Tag) Biological Activity : Background : The influenza viral Hemagglutinin (HA) protein is a homotrimer with a receptor binding pocket on the globular head of each monomer.HA has at least 18 different antigens. These subtypes are named H1 through H18.HA has two functions. Firstly, …
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