RNA VirusesVaccinia virusVirus ReplicationVirus CultivationReceptors, VirusInfluenza A Virus, H1N1 SubtypeMolecular Sequence DataSequence Analysis, DNAVirus SheddingInfluenza A Virus, H5N1 SubtypeRNA, ViralInfluenza A Virus, H3N2 SubtypeMeasles virusPhylogenyRabies virusSpecies SpecificityAntigens, ViralViral ProteinsPlant VirusesGenes, ViralVirulenceVirus DiseasesDefective VirusesVirus AssemblySindbis VirusSimian virus 40Amino Acid SequenceDNA VirusesHemagglutinin Glycoproteins, Influenza VirusCell LineNeutralization TestsWest Nile virusVero CellsDNA, ViralPolymerase Chain ReactionCercopithecus aethiopsMumps virusOrthomyxoviridae InfectionsRespiratory Syncytial VirusesHepatitis B virusOrthomyxoviridaeAntibodies, ViralViral Plaque AssayGenetic VariationInfluenza, HumanGenotypeSimian immunodeficiency virusHepatitis A virusAntiviral AgentsRecombination, GeneticVesicular stomatitis Indiana virusVirus ActivationDisease OutbreaksMice, Inbred StrainsVirus LatencyVirionReticuloendotheliosis virusHemagglutinins, ViralInfluenza A virusLassa virusCowpox virusVaccines, AttenuatedHemagglutination Inhibition TestsYellow fever virusMosaic VirusesMutationCytopathogenic Effect, ViralPlasmidsHIV-1Encephalitis Viruses, Tick-BorneCapsidPhenotypeMurine hepatitis virusVirus AttachmentViral Structural ProteinsDNA PrimersCricetinaeCells, CulturedCross ReactionsNeuraminidaseSerotypingOncogenic VirusesBase SequenceSemliki forest virusViruses, UnclassifiedMyxoma virusTumor Virus InfectionsGenome, ViralRNA, Ribosomal, 16SAvian leukosis virusEscherichia coliInfluenza A Virus, H7N7 SubtypeVariola virusOpen Reading FramesNucleic Acid HybridizationHIV InfectionsAvian Sarcoma VirusesParainfluenza Virus 1, HumanGene Expression Regulation, ViralChickens