AKR murine leukemia virusLeukemia Virus, MurineMice, Inbred AKRMoloney murine leukemia virusFriend murine leukemia virusMammary Tumor Virus, MouseLeukemia, ExperimentalAbelson murine leukemia virusLeukemia Virus, FelineRauscher VirusRetroviridae InfectionsMammary Neoplasms, ExperimentalLeukemia Virus, BovineCell LineLeukemiaCell Line, TumorRetroviridaeDNA, ViralMolecular Sequence DataVirus ReplicationGenes, ViralBase SequenceTumor Virus InfectionsMink Cell Focus-Inducing VirusesRNA-Directed DNA PolymeraseMice, Inbred StrainsReceptors, VirusProvirusesMammary Neoplasms, AnimalGammaretrovirusGene Products, gagVirus IntegrationRNA, ViralLeukemia, Myeloid, AcuteTumor Cells, CulturedViral ProteinsMice, Inbred BALB CLeukemia Virus, Gibbon ApeGenetic Vectors