Avian myeloblastosis virusAKR murine leukemia virusAvian leukosis virusRNA-Directed DNA PolymeraseLeukemia Virus, MurineDNA-Directed DNA PolymeraseMice, Inbred AKRTemplates, GeneticMoloney murine leukemia virusAvian Sarcoma VirusesAvian LeukosisSarcoma Viruses, MurineDNA, ViralRauscher VirusAlpharetrovirusGenes, ViralRNA, ViralOncogene Proteins v-mybBase SequenceFriend murine leukemia virusHelper VirusesPolynucleotidesCell Transformation, ViralNucleic Acid HybridizationViral ProteinsKirsten murine sarcoma virusLeukemia, ExperimentalDNA NucleotidyltransferasesHarvey murine sarcoma virusMolecular Sequence DataRetroviridaeAbelson murine leukemia virusVirus ReplicationCell LineDNA Polymerase IThymine NucleotidesChickensLeukemia Virus, FelineSarcomaDNA Polymerase IIChick EmbryoOncogenic VirusesMolecular WeightRetroviridae InfectionsDNA ReplicationLeukemia Virus, BovineCentrifugation, Density GradientVaccinia virusTritiumDeoxyribonucleotidesDNA Polymerase IIIOncogenesGammaretrovirusAmino Acid SequenceDefective VirusesTranscription, GeneticRNA VirusesReceptors, VirusRibonucleasesStreptonigrinDNA Restriction EnzymesCell-Free SystemSatellite VirusesKineticsPhosphonoacetic AcidRecombination, GeneticGenome, ViralDNARepetitive Sequences, Nucleic AcidSarcoma Viruses, FelineRetroviridae Proteins, OncogenicRetroviridae ProteinsCell Transformation, NeoplasticMutationDNA Polymerase betaCloning, MolecularLeukemiaVirus CultivationGene Products, gagVirus AssemblySimplexvirusMoloney murine sarcoma virusPolymerase Chain ReactionRibonuclease HTumor Virus Infections