AKR murine leukemia virusLeukemia Virus, MurineMice, Inbred AKRMoloney murine leukemia virusMammary Tumor Virus, MouseFriend murine leukemia virusLeukemia, ExperimentalAbelson murine leukemia virusRauscher VirusLeukemia Virus, FelineRetroviridae InfectionsLeukemia Virus, BovineVirus ReplicationCell LineGenes, ViralDNA, ViralTumor Virus InfectionsReceptors, VirusRetroviridaeMolecular Sequence DataLeukemiaRNA, ViralRNA-Directed DNA PolymeraseBase SequenceViral ProteinsRNA VirusesMice, Inbred StrainsMink Cell Focus-Inducing VirusesProvirusesGammaretrovirusOncogenic VirusesDefective VirusesGene Products, gagVirus IntegrationVirus CultivationAntigens, ViralAmino Acid SequenceVirus AssemblyCell Transformation, ViralRepetitive Sequences, Nucleic AcidVaccinia virusViral Envelope ProteinsLeukemia, Myeloid, AcuteGenetic VectorsVirionLeukemia Virus, Gibbon ApeSpecies Specificity