Viral Structural ProteinsInfluenza A virusInfluenza, HumanInfluenza VaccinesInfluenza A Virus, H1N1 SubtypeInfluenza in BirdsInfluenza B virusInfluenza A Virus, H3N2 SubtypeViral ProteinsInfluenza A Virus, H5N1 SubtypeRNA, ViralHemagglutinin Glycoproteins, Influenza VirusVirionAlphavirusCell LineOrthomyxoviridaeMolecular Sequence DataVirus ReplicationGene Products, revOrthomyxoviridae InfectionsVirus AssemblyCapsidSindbis VirusCapsid ProteinsGenome, ViralAntibodies, Viralrev Gene Products, Human Immunodeficiency VirusGenes, ViralAmino Acid SequenceBase SequenceInfluenza A Virus, H9N2 SubtypeSemliki forest virusPandemicsAntigens, ViralInfluenza A Virus, H3N8 SubtypeDNA, ViralViral Envelope ProteinsInfluenza A Virus, H2N2 SubtypeCercopithecus aethiopsHemagglutination Inhibition TestsNeuraminidaseMolecular WeightInfluenza A Virus, H7N7 SubtypeSARS VirusOpen Reading FramesGene Expression Regulation, ViralHemagglutinins, ViralCricetinaeRetroviridaeProtein BiosynthesisChick EmbryoDisease OutbreaksOseltamivirInfluenza A Virus, H5N2 SubtypeInfluenza A Virus, H7N9 SubtypeGene Products, gagCentrifugation, Density GradientReassortant VirusesElectrophoresis, Polyacrylamide GelSeasonsBirdsVaccinationRNA, MessengerPlasmidsTritiumMutationCloning, MolecularHIV-1Influenza A Virus, H1N2 SubtypeViral Matrix ProteinsAntiviral AgentsHeLa CellsTranscription, GeneticVaccines, InactivatedCells, CulturedViral Core ProteinsDucksZanamivirAmantadineMadin Darby Canine Kidney CellsTransfectionPoultryViral Nonstructural ProteinsDogsCross ReactionsInfluenzavirus CNucleoproteinsVaccines, AttenuatedPhylogenyRimantadineRubella virusMice, Inbred BALB CInfluenza A Virus, H7N3 SubtypeCross ProtectionInfluenzavirus APneumonia, ViralNeutralization TestsSentinel SurveillanceVirus CultivationChickens