Endogenous RetrovirusesRetroviridaeRetroviridae InfectionsRetroviruses, SimianLeukemia Virus, MurineTerminal Repeat SequencesBetaretrovirusSpumavirusProvirusesGene Products, gagMolecular Sequence DataSimian foamy virusRetroelementsVirus IntegrationRetroviridae ProteinsBase SequenceMoloney murine leukemia virusRNA-Directed DNA PolymeraseGenes, polGenes, gagGammaretrovirusCell LineGenes, envMason-Pfizer monkey virusGenetic VectorsDNA, ViralVirus ReplicationRNA, ViralGenes, Intracisternal A-ParticleGenes, ViralAlpharetrovirusHIV-1Gene Products, envAmino Acid SequenceAvian leukosis virusGene Products, polReceptors, VirusAvian Sarcoma VirusesVirionRepetitive Sequences, Nucleic AcidReticuloendotheliosis virusViral Envelope ProteinsVirus AssemblyLeukemia Virus, FelinePhylogenyLeukemia Virus, BovineGenome, ViralDeltaretrovirusCytidine DeaminaseJaagsiekte sheep retrovirusGene Expression Regulation, ViralReverse TranscriptionReticuloendotheliosis Viruses, AvianCercopithecidaeRecombination, GeneticCell Transformation, ViralCytosine DeaminaseViral ProteinsOncogenesVirus ReleaseHuman T-lymphotropic virus 1Rous sarcoma virusTransduction, GeneticHIVCloning, MolecularInfectious Anemia Virus, EquineTransfectionTranscription, GeneticDeltaretrovirus InfectionsLeukemia, ExperimentalFusion Proteins, gag-polTrager duck spleen necrosis virusMammary Tumor Virus, MousePrimatesSpecies SpecificityHuman T-lymphotropic virus 2Avian myeloblastosis virusgag Gene Products, Human Immunodeficiency VirusTumor Virus InfectionsEvolution, MolecularLeukemia Virus, Gibbon ApeViral InterferenceFriend murine leukemia virusVisna-maedi virusSequence Homology, Nucleic AcidSarcoma Virus, Woolly MonkeyHIV-2Cebidae3T3 CellsHarvey murine sarcoma virusHexadimethrine BromideCapsidIntegrasesPolymerase Chain ReactionRetroviridae Proteins, OncogenicMonkey DiseasesQuailGenomeHeLa CellsMutation