AKR murine leukemia virusLeukemia Virus, MurineMice, Inbred AKRMoloney murine leukemia virusBuxusFriend murine leukemia virusLeukemia, ExperimentalAbelson murine leukemia virusLeukemia Virus, FelineRetroviridae InfectionsRauscher VirusLeukemia Virus, BovineMink Cell Focus-Inducing VirusesVirus ReplicationMolecular Sequence DataReceptors, VirusCell LineLeukemiaGenes, ViralDNA, ViralRetroviridaeTumor Virus InfectionsPreleukemiaRNA-Directed DNA PolymeraseProvirusesAmino Acid SequenceRNA VirusesRNA, ViralGene Products, gagDefective VirusesBase SequenceVirus IntegrationViral ProteinsMice, Inbred StrainsMinkGammaretrovirusVirus AssemblyLeukemia, Myeloid, AcuteVirus Cultivation3T3 CellsLeukemia Virus, Gibbon ApeViral Envelope Proteins