RetroviridaeEndogenous RetrovirusesRetroviridae InfectionsBetaretrovirusPulmonary Adenomatosis, OvineRetroviruses, SimianLeukemia Virus, MurineGenetic VectorsMoloney murine leukemia virusProvirusesTerminal Repeat SequencesGammaretrovirusMason-Pfizer monkey virusMolecular Sequence DataBase SequenceGene Products, gagCell LineAvian leukosis virusGene Products, envRetroviridae ProteinsDNA, ViralGenes, gagRNA-Directed DNA PolymeraseVirus IntegrationFriend murine leukemia virusReceptors, VirusGenes, envTransduction, GeneticRepetitive Sequences, Nucleic AcidGenes, polReticuloendotheliosis virusTumor Virus InfectionsGenes, ViralLeukemia, ExperimentalAlpharetrovirusCell Transformation, ViralViral Envelope ProteinsVirus ReplicationRNA, ViralAvian Sarcoma VirusesAvian myeloblastosis virusTransfectionGene Products, polVirionOncogenesAmino Acid SequenceMonkey DiseasesSpumavirusCloning, MolecularGene Transfer Techniques3T3 CellsCercopithecidaeLeukemia Virus, FelineDeltaretrovirusEpsilonretrovirusHexadimethrine BromideGenetic TherapyDefective VirusesRecombination, GeneticHelper VirusesChick EmbryoSarcoma Viruses, MurineCells, CulturedRetroviridae Proteins, OncogenicViral ProteinsGenome, ViralGene Expression Regulation, ViralFusion Proteins, gag-polPolymerase Chain ReactionTranscription, GeneticMammary Tumor Virus, MouseGenes, Intracisternal A-ParticleVirus AssemblyHIV-1Blotting, SouthernRous sarcoma virusKanamycin KinasePhylogenyLeukemia Virus, Gibbon ApeHematopoietic Stem CellsQuailChickensXenotropic murine leukemia virus-related virusHuman T-lymphotropic virus 1SheepRadiation Leukemia VirusCell Transformation, NeoplasticNucleic Acid HybridizationMoloney murine sarcoma virusInfectious Anemia Virus, EquineSequence Homology, Nucleic AcidAvian LeukosisPrimatesOncogene Protein p55(v-myc)NIH 3T3 CellsMutationRetroelementsRNA, MessengerHIVLeukemia Virus, Bovine