AKR murine leukemia virusLeukemia Virus, MurineMice, Inbred AKRMoloney murine leukemia virusFriend murine leukemia virusLeukemia, ExperimentalAbelson murine leukemia virusLeukemia Virus, FelineRauscher VirusRetroviridae InfectionsLeukemia Virus, BovineNeoplasms, ExperimentalVirus ReplicationCell LineSarcoma, ExperimentalReceptors, VirusLeukemiaRetroviridaeGenes, ViralDNA, ViralMice, Inbred StrainsMolecular Sequence DataMink Cell Focus-Inducing VirusesRNA-Directed DNA PolymeraseTumor Virus InfectionsRNA VirusesMice, Inbred BALB CNeoplasm TransplantationDefective VirusesProvirusesGene Products, gagRNA, ViralBase SequenceViral ProteinsVirus IntegrationFibrosarcomaGammaretrovirusTransplantation, IsogeneicMice, Inbred C57BLVirus AssemblyLymphomaLeukemia, Myeloid, AcuteSpleenVirus CultivationLeukemia Virus, Gibbon ApeGenetic VectorsCell Transformation, ViralVaccinia virus