Friend murine leukemia virusLeukemia Virus, MurineMoloney murine leukemia virusLeukemia, ExperimentalRetroviridae InfectionsAKR murine leukemia virusLeukemia, Erythroblastic, AcuteSpleen Focus-Forming VirusesMink Cell Focus-Inducing VirusesTumor Virus InfectionsViral Envelope ProteinsAbelson murine leukemia virusHelper VirusesRetroviridaeMice, Inbred StrainsRetroviridae Proteins, OncogenicDNA, ViralGenes, ViralGenes, envRauscher VirusLeukemia Virus, FelineCell LineBase SequenceVirus ReplicationMolecular Sequence DataViral InterferenceGene Products, gagGene Products, envLeukemia Virus, BovineCell Transformation, ViralFriendsRepetitive Sequences, Nucleic AcidViral ProteinsAmino Acid SequenceLeukemia3T3 CellsCloning, MolecularProto-Oncogene Protein c-fli-1Recombination, GeneticMice, Inbred AKRMice, Inbred BALB CRNA-Directed DNA PolymeraseReceptors, VirusSpleenProvirusesTransfectionGammaretrovirusRNA, ViralDefective VirusesLeukemia, Myeloid, AcuteVirus IntegrationLeukemia Virus, Gibbon ApeOncogenesMinkPreleukemiaHuman T-lymphotropic virus 1Genetic VectorsSarcoma Viruses, MurineErythroblastsVirionGlycoproteinsVirus AssemblyLymphomaGenes, gagRNA VirusesSpecies SpecificityXenotropic murine leukemia virus-related virusAntigens, ViralLeukemia, Lymphocytic, Chronic, B-CellVirus CultivationLeukemia, LymphoidCell Transformation, NeoplasticMutationNucleic Acid HybridizationThymus NeoplasmsMurine Acquired Immunodeficiency SyndromeGene Products, taxOncogenic VirusesRibonuclease HRetroviridae ProteinsRadiation Leukemia VirusTranscription, GeneticGenes, polTerminal Repeat SequencesDNA Restriction EnzymesCells, CulturedGene Expression Regulation, ViralMuridaeDimethyl SulfoxideTumor Cells, CulturedHylobatesPolymerase Chain ReactionVaccinia virusOncogene Proteins v-ablLeukemia L1210Enhancer Elements, GeneticEnzootic Bovine LeukosisLeukemia, Myelogenous, Chronic, BCR-ABL PositiveRNA, MessengerDNA, Neoplasm