Moloney murine leukemia virusLeukemia Virus, MurineLeukemia, ExperimentalAKR murine leukemia virusFriend murine leukemia virusMoloney murine sarcoma virusRNA-Directed DNA PolymeraseRetroviridae InfectionsAbelson murine leukemia virusDNA, ViralRetroviridaeCell LineSarcoma Viruses, MurineGenes, ViralPreleukemiaGene Products, gagLeukemia Virus, FelineBase SequenceProvirusesVirus ReplicationMolecular Sequence DataVirus IntegrationRNA, Viral3T3 CellsMink Cell Focus-Inducing VirusesRauscher VirusRepetitive Sequences, Nucleic AcidRibonuclease HGenetic VectorsLeukemia Virus, BovineGammaretrovirusTumor Virus InfectionsVirionGenes, gagViral ProteinsReceptors, VirusViral Envelope ProteinsGene Products, envDefective VirusesRetroviridae Proteins, OncogenicLeukemiaCell Transformation, ViralIntegrasesAmino Acid SequenceMice, Inbred AKRHelper VirusesRecombination, GeneticMice, Inbred StrainsRetroviridae ProteinsGenes, polMutationGenes, envVirus AssemblyCloning, MolecularTranscription, GeneticNucleic Acid HybridizationTransfectionDNA, RecombinantThymus NeoplasmsTerminal Repeat SequencesPlasmidsEnhancer Elements, GeneticLymphomaTransduction, GeneticGene Expression Regulation, ViralHylobatesLeukemia, Myeloid, AcuteParalysisHIV-1MinkGenome, ViralRNA, Transfer, ProThymomaDNA Restriction EnzymesLeukemia Virus, Gibbon ApeAvian myeloblastosis virusLymphoma, T-CellCells, CulturedBlotting, SouthernProto-Oncogene Proteins c-pim-1Cell Transformation, NeoplasticRestriction MappingCapsidOncogenesHuman T-lymphotropic virus 1Giant CellsMice, Inbred BALB CDNA PrimersSpecies SpecificityFusion Proteins, gag-polTemplates, GeneticViral Plaque AssayBinding SitesDNA NucleotidyltransferasesNucleic Acid ConformationNIH 3T3 CellsAntigens, ViralVirus CultivationChimeraTemperature