ProvirusesEndogenous RetrovirusesRetroviridaeLeukemia Virus, MurineRetroviridae InfectionsTerminal Repeat SequencesVirus IntegrationDNA, ViralBase SequenceGenes, ViralRetroviruses, SimianMolecular Sequence DataMoloney murine leukemia virusBetaretrovirusSpumavirusRepetitive Sequences, Nucleic AcidMammary Tumor Virus, MouseReticuloendotheliosis virusAKR murine leukemia virusAvian leukosis virusGenes, polGene Products, gagGenes, envGenes, gagLeukemia Virus, FelineRecombination, GeneticMice, Inbred AKRCell LineVirus ReplicationRNA, ViralGenetic VectorsLeukemia, ExperimentalHelper VirusesDefective VirusesGammaretrovirusHIV-1RNA-Directed DNA PolymeraseDNA Restriction EnzymesLeukemia Virus, BovineAvian LeukosisCloning, MolecularCell Transformation, ViralAmino Acid SequenceMink Cell Focus-Inducing VirusesGenome, ViralSimian foamy virusRetroelementsGene Expression Regulation, ViralTranscription, GeneticAvian Sarcoma VirusesVirionMice, Inbred StrainsGene Products, envViral Envelope ProteinsOncogenesRetroviridae ProteinsGene Products, polPhylogenyThymus NeoplasmsDeltaretrovirusNucleic Acid HybridizationLymphomaTransfectionRetroviridae Proteins, OncogenicSequence Homology, Nucleic AcidReceptors, VirusBlotting, SouthernMason-Pfizer monkey virusTumor Virus InfectionsVirus AssemblyHuman T-lymphotropic virus 1Genes, Intracisternal A-ParticleRestriction MappingAlpharetrovirusViral ProteinsPolymerase Chain ReactionHIVTransduction, GeneticCatsDNA, RecombinantVirus LatencyMinkDNA PrimersFriend murine leukemia virusVirus ActivationSpecies SpecificityChickensMutationEnzootic Bovine LeukosisKanamycin KinaseThymomaChick EmbryoSequence Analysis, DNASequence Alignment3T3 CellsChromosome MappingTheropithecusCells, CulturedLymphoma, T-CellXenotropic murine leukemia virus-related virus