AKR murine leukemia virusLeukemia Virus, MurineXenotropic murine leukemia virus-related virusMoloney murine leukemia virusMice, Inbred AKRRetroviridae InfectionsFriend murine leukemia virusGammaretrovirusMinkLeukemia, ExperimentalAbelson murine leukemia virusDNA, ViralDNA ContaminationMice, Inbred StrainsGenes, ViralFatigue Syndrome, ChronicLeukemia Virus, FelineRauscher VirusTumor Virus InfectionsLeukemia Virus, BovineRetroviridaeVirus ReplicationCell LineMink Cell Focus-Inducing VirusesLeukemiaVirus IntegrationReceptors, VirusMolecular Sequence DataBase SequenceRNA-Directed DNA PolymeraseViral Envelope ProteinsProvirusesGene Products, gagRecombination, GeneticLeukemia, Myeloid, AcuteViral ProteinsRNA, ViralLeukemia Virus, Gibbon ApeSarcoma Viruses, MurineHelper Viruses3T3 CellsGene Products, envCytosine DeaminaseDefective VirusesPreleukemiaCell Transformation, ViralPolymerase Chain ReactionAmino Acid SequenceHuman T-lymphotropic virus 1Repetitive Sequences, Nucleic AcidRetroviridae Proteins, OncogenicEndoribonucleasesGenetic VectorsProstatic NeoplasmsVirionVirus AssemblyLymphomaAntibodies, ViralAntigens, ViralGenes, envVirus CultivationRNA VirusesMuridaeGenes, gagSpecies SpecificityOncogenic VirusesNucleic Acid HybridizationLeukemia, Lymphocytic, Chronic, B-CellLeukemia, LymphoidThymus NeoplasmsViral InterferenceMurine Acquired Immunodeficiency SyndromeGene Products, taxCloning, MolecularRibonuclease HRetroviridae ProteinsRadiation Leukemia VirusTransfectionTerminal Repeat SequencesGenes, polMice, Inbred BALB CGene Expression Regulation, ViralHylobatesCells, CulturedCell Transformation, NeoplasticMutationTranscription, Genetic