AKR murine leukemia virusLeukemia Virus, MurineMice, Inbred AKRLeukemia, ExperimentalMoloney murine leukemia virusFriend murine leukemia virusAbelson murine leukemia virusLeukemiaLeukemia Virus, FelineRauscher VirusLeukemia Virus, BovineRetroviridae InfectionsLeukemia, Myeloid, AcuteRetroviridaeCell LineMink Cell Focus-Inducing VirusesVirus ReplicationDNA, ViralGenes, ViralRNA-Directed DNA PolymeraseLeukemia, Lymphocytic, Chronic, B-CellReceptors, VirusMolecular Sequence DataLeukemia, LymphoidBase SequenceProvirusesGene Products, gagGammaretrovirusTumor Virus InfectionsMice, Inbred StrainsLeukemia Virus, Gibbon ApeVirus IntegrationRNA, ViralPreleukemia