Defective VirusesMurine Acquired Immunodeficiency SyndromeVirus ReplicationHelper VirusesGenes, ViralViral ProteinsDNA, ViralCell LineRNA, ViralViral InterferenceLeukemia Virus, MurineGenome, ViralMutationMolecular Sequence DataHerpesvirus 1, HumanGenetic Complementation TestVero CellsBase SequenceRNA VirusesCercopithecus aethiopsVaccinia virusImmediate-Early ProteinsGene Expression Regulation, ViralReceptors, VirusVirus CultivationVirus SheddingSimian virus 40Virus DiseasesVirus AssemblyTranscription, GeneticDNA VirusesPlant VirusesTransfectionViral Envelope ProteinsMutant ProteinsSindbis VirusMutagenesisMeasles virusInfluenza A Virus, H1N1 SubtypeRabies virusDNA ReplicationInfluenza A Virus, H5N1 SubtypeCells, CulturedHepatitis B virusInfluenza A Virus, H3N2 SubtypeWest Nile virusRespiratory Syncytial VirusesAmino Acid SequenceVirus ActivationMutagenesis, Site-DirectedPhenotypeAntigens, ViralVesicular stomatitis Indiana virusVirus LatencyHemagglutinin Glycoproteins, Influenza VirusVirionEscherichia coliViral Plaque AssayOncogenic VirusesSimian immunodeficiency virusPlasmidsMice, Mutant StrainsVirulenceAmino Acid SubstitutionCricetinaeParainfluenza Virus 1, HumanAvian Sarcoma VirusesMumps virusSemliki forest virusMosaic VirusesAntiviral AgentsRecombination, GeneticPhylogenyNeutralization TestsTemperatureHepatitis A virusDNA PrimersProtein BindingVirus AttachmentBinding SitesGene DeletionTumor Virus InfectionsBK VirusCapsidJC VirusBacterial ProteinsSequence Homology, Amino AcidPolymerase Chain ReactionSequence Analysis, DNAViruses, UnclassifiedAvian leukosis virusKineticsSimplexvirusOrthomyxoviridaeGenetic VectorsMoloney murine leukemia virusBluetongue virusVirus IntegrationOrthomyxoviridae InfectionsPoint Mutation