AKR murine leukemia virusLeukemia Virus, MurineAvian Sarcoma VirusesMice, Inbred AKRMoloney murine leukemia virusPolyomavirusAlpharetrovirusSarcoma, AvianFriend murine leukemia virusSarcoma Viruses, MurineCell Transformation, ViralLeukemia, ExperimentalAbelson murine leukemia virusGenes, ViralSarcomaLeukemia Virus, FelineAvian leukosis virusDNA, ViralRetroviridaeViral ProteinsCell LineRauscher VirusChick EmbryoRNA-Directed DNA PolymeraseRNA, ViralDefective VirusesVirus ReplicationRetroviridae InfectionsBase SequenceLeukemia Virus, BovineCell Transformation, NeoplasticReceptors, VirusSarcoma, ExperimentalGene Products, gagGammaretrovirusOncogene Protein pp60(v-src)Molecular Sequence DataSarcoma Viruses, FelineHelper VirusesKirsten murine sarcoma virusLeukemiaVirus IntegrationMoloney murine sarcoma virusQuailRetroviridae ProteinsNucleic Acid HybridizationRous sarcoma virusTumor Virus InfectionsMink Cell Focus-Inducing VirusesOncogenesRepetitive Sequences, Nucleic AcidAmino Acid SequenceIntegrasesRNA VirusesChickensCell Line, TumorCells, CulturedProvirusesRecombination, GeneticMice, Inbred StrainsGenetic VectorsAntigens, ViralVirus AssemblyVirus CultivationMutationVirionOncogenic VirusesHarvey murine sarcoma virusTransfectionCloning, MolecularViral Envelope ProteinsMinkLeukemia, Myeloid, AcuteGene Products, envTumor Cells, CulturedDucksTranscription, GeneticDNA Restriction EnzymesSpecies SpecificityLeukemia Virus, Gibbon ApeGenes, gagRetroviridae Proteins, OncogenicFibroblasts3T3 CellsMolecular WeightVaccinia virus