Virus IntegrationEndogenous RetrovirusesLeukemia Virus, MurineProto-Oncogene Protein c-fli-1DNA, ViralProvirusesMoloney murine leukemia virusIntegrasesRetroviridaeMolecular Sequence DataBase SequenceProto-OncogenesHepatitis B virusCell LineCell Transformation, ViralRNA VirusesRetroviridae InfectionsVirus ReplicationCarcinoma, HepatocellularReceptors, VirusVaccinia virusCloning, MolecularLiver NeoplasmsVirus AssemblyVirus CultivationGenes, ViralGenetic VectorsDefective VirusesRNA, ViralSimian virus 40Virus SheddingTerminal Repeat SequencesVirus DiseasesDNA VirusesSpumavirusRetroviruses, SimianPlant VirusesEarly Detection of CancerViral ProteinsGene Products, gagSystems IntegrationAmino Acid SequenceVirionAvian Sarcoma VirusesAvian leukosis virusSindbis VirusMeasles virusRecombination, GeneticInfluenza A Virus, H1N1 SubtypeBetaretrovirusPhylogenyPolymerase Chain ReactionRabies virusInfluenza A Virus, H5N1 SubtypeTumor Virus InfectionsHIV-1RNA-Directed DNA PolymeraseVirus ActivationGene Expression Regulation, ViralTransfectionSimian foamy virusTranscription, GeneticAntigens, ViralInfluenza A Virus, H3N2 SubtypeRetroelementsGammaretrovirusWest Nile virusRNA, MessengerSimian immunodeficiency virusVesicular stomatitis Indiana virusRespiratory Syncytial VirusesReverse Transcriptase Polymerase Chain ReactionLeukemia Virus, FelineSequence Analysis, DNAVirus LatencyGenes, gagGenes, envGenes, polCercopithecus aethiopsProstatic NeoplasmsDNA PrimersOncogenic VirusesCells, CulturedOvarian NeoplasmsRepetitive Sequences, Nucleic AcidBreast NeoplasmsPlasmidsHeLa CellsGene Products, envMutationCapsidAntiviral AgentsAlpharetrovirusReticuloendotheliosis virusLeukemia Virus, BovineLung NeoplasmsCell Transformation, NeoplasticMammary Tumor Virus, MousePromoter Regions, GeneticHemagglutinin Glycoproteins, Influenza Virus