AKR murine leukemia virusLeukemia Virus, MurineMice, Inbred AKRMoloney murine leukemia virusBuxusFriend murine leukemia virusLeukemia, ExperimentalAbelson murine leukemia virusRetroviridae InfectionsLeukemia Virus, FelineRauscher VirusRetroviridaeLeukemia Virus, BovineVirus ReplicationReceptors, VirusMolecular Sequence DataCell LineLeukemiaGenes, ViralDNA, ViralRNA-Directed DNA PolymeraseMink Cell Focus-Inducing VirusesProvirusesTumor Virus InfectionsGene Products, gagRNA, ViralAmino Acid SequenceGammaretrovirusRNA VirusesVirus IntegrationDefective VirusesBase SequenceViral ProteinsVirus AssemblyGenetic VectorsMice, Inbred StrainsLeukemia Virus, Gibbon ApeVirus CultivationLeukemia, Myeloid, AcuteCell Transformation, ViralEndogenous RetrovirusesVirionGene Products, env3T3 CellsHuman T-lymphotropic virus 1Viral Envelope ProteinsRepetitive Sequences, Nucleic Acid