Moloney murine leukemia virusLeukemia Virus, MurineLeukemia, ExperimentalAKR murine leukemia virusFriend murine leukemia virusMoloney murine sarcoma virusRNA-Directed DNA PolymeraseRetroviridae InfectionsAbelson murine leukemia virusDNA, ViralRetroviridaeSarcoma Viruses, MurinePreleukemiaGenes, ViralGene Products, gagLeukemia Virus, FelineCell LineBase SequenceProvirusesVirus Replication3T3 CellsVirus IntegrationMink Cell Focus-Inducing VirusesMolecular Sequence DataRauscher VirusRNA, ViralRepetitive Sequences, Nucleic AcidRibonuclease HGenetic VectorsLeukemia Virus, BovineGammaretrovirusTumor Virus InfectionsGenes, gagVirionReceptors, VirusGene Products, envViral Envelope ProteinsRetroviridae Proteins, OncogenicViral ProteinsLeukemiaAmino Acid SequenceCell Transformation, ViralIntegrasesDefective VirusesMice, Inbred AKRMice, Inbred StrainsRetroviridae ProteinsGenes, polHelper VirusesCloning, MolecularRecombination, GeneticGenes, envNucleic Acid HybridizationVirus AssemblyDNA, RecombinantMutationTranscription, GeneticTransfectionThymus NeoplasmsTerminal Repeat SequencesLymphomaEnhancer Elements, GeneticTransduction, GeneticHylobatesLeukemia, Myeloid, AcuteDNA Restriction EnzymesParalysisPlasmidsMinkThymomaRNA, Transfer, ProLeukemia Virus, Gibbon ApeAvian myeloblastosis virusGene Expression Regulation, ViralLymphoma, T-CellBlotting, SouthernProto-Oncogene Proteins c-pim-1Cell Transformation, NeoplasticRestriction MappingOncogenesHIV-1Human T-lymphotropic virus 1Cells, CulturedCapsidGenome, ViralSpecies SpecificityGiant CellsMice, Inbred BALB CDNA PrimersFusion Proteins, gag-polBinding SitesDNA NucleotidyltransferasesPolymerase Chain ReactionNIH 3T3 CellsChimeraProto-OncogenesVirus CultivationAntigens, ViralLeukemia, Erythroblastic, AcuteTemplates, Genetic