Defective VirusesAvian Sarcoma VirusesMurine Acquired Immunodeficiency SyndromeSarcoma Viruses, MurineSarcomaHelper VirusesVirus ReplicationRNA VirusesRetroviridaeGenes, ViralViral ProteinsDNA, ViralRNA, ViralAvian leukosis virusSarcoma Viruses, FelineViral InterferenceLeukemia Virus, MurineKirsten murine sarcoma virusGammaretrovirusRous sarcoma virusVaccinia virusReceptors, VirusCell LinePapioMoloney murine sarcoma virusCell Transformation, ViralVirus CultivationOncogenic VirusesVirus SheddingSimian virus 40Virus AssemblyMoloney murine leukemia virusVirus DiseasesTheropithecusHarvey murine sarcoma virusMolecular Sequence DataSarcoma, ExperimentalSarcoma, AvianAlpharetrovirusRNA-Directed DNA PolymerasePlant VirusesChick EmbryoDNA VirusesAntigens, ViralBase SequenceSindbis VirusSarcoma, EwingMeasles virusInfluenza A Virus, H1N1 SubtypeSarcoma, KaposiRabies virusHaplorhiniInfluenza A Virus, H5N1 SubtypeSarcoma, SynovialInfluenza A Virus, H3N2 SubtypeHepatitis B virusWest Nile virusSarcoma Virus, Woolly MonkeyRespiratory Syncytial VirusesNucleic Acid HybridizationEndogenous RetrovirusesChickensArgasidaeOncogene Protein pp60(v-src)Virus ActivationAKR murine leukemia virusCell Transformation, NeoplasticVesicular stomatitis Indiana virusGenetic Complementation TestVirionVirus LatencyGenes, envGenome, ViralSpecies SpecificityRecombination, GeneticHemagglutinin Glycoproteins, Influenza VirusRetroviruses, SimianParainfluenza Virus 1, HumanCells, CulturedSarcoma 180PhylogenyIdoxuridineGene Products, gagCercopithecus aethiopsVero CellsSimian immunodeficiency virusRepetitive Sequences, Nucleic AcidTumor Virus InfectionsViral Plaque AssayAmino Acid SequenceLeukemia Virus, FelineMumps virusMosaic VirusesNeutralization TestsProvirusesRauscher VirusAvian LeukosisVirus IntegrationGene Expression Regulation, ViralHepatitis A virus