Friend murine leukemia virusLeukemia Virus, MurineMoloney murine leukemia virusLeukemia, ExperimentalRetroviridae InfectionsAKR murine leukemia virusLeukemia, Erythroblastic, AcuteMink Cell Focus-Inducing VirusesSpleen Focus-Forming VirusesTumor Virus InfectionsViral Envelope ProteinsAbelson murine leukemia virusHelper VirusesRetroviridaeMice, Inbred StrainsRetroviridae Proteins, OncogenicDNA, ViralGenes, ViralRauscher VirusGenes, envCell LineLeukemia Virus, FelineBase SequenceVirus ReplicationGene Products, gagMolecular Sequence DataViral InterferenceGene Products, envCell Transformation, ViralLeukemia Virus, BovineRepetitive Sequences, Nucleic AcidViral ProteinsFriends3T3 CellsAmino Acid SequenceCloning, MolecularLeukemiaProto-Oncogene Protein c-fli-1Recombination, GeneticMoloney murine sarcoma virusMice, Inbred AKRRNA-Directed DNA PolymeraseMice, Inbred BALB CSarcoma Viruses, MurineGammaretrovirusReceptors, VirusSpleenProvirusesRNA, ViralDefective VirusesVirus IntegrationTransfectionLeukemia, Myeloid, AcutePreleukemiaLeukemia Virus, Gibbon ApeMinkOncogenesGenetic VectorsVirionHuman T-lymphotropic virus 1Virus AssemblyErythroblastsGenes, gagLymphomaGlycoproteinsAntigens, ViralSpecies SpecificityRibonuclease HVirus CultivationRNA VirusesNucleic Acid HybridizationThymus NeoplasmsXenotropic murine leukemia virus-related virusRetroviridae ProteinsLeukemia, Lymphocytic, Chronic, B-CellLeukemia, LymphoidGenes, polDNA Restriction EnzymesOncogenic VirusesRadiation Leukemia VirusMurine Acquired Immunodeficiency SyndromeGene Products, taxTranscription, GeneticCell Transformation, NeoplasticMuridaeGene Expression Regulation, ViralHylobatesMutationTerminal Repeat SequencesCells, CulturedEnhancer Elements, GeneticDimethyl SulfoxideDNA, RecombinantThymomaVaccinia virusTransduction, GeneticTumor Cells, CulturedViral Plaque AssayOncogene Proteins v-ablIntegrases