SEARCH Articles Figures Tables Anti-influenza A virus agents Influenza A Virus Life Cycle Influenza A and B viruses Influenza A virus hemagglutinin Influenza Virus Sialidase A Target for Drug Discovery Influenza Virus Sialidase as a Drug Discovery Target Influenza type A virus Influenza virus Influenza virus A and B sialidase Structural Differences Recently Identified in Influenza a Virus Sialidase Subtypes The HA Protein of Influenza A and B Viruses Viruses influenza virus