AKR murine leukemia virusLeukemia Virus, MurineMice, Inbred AKRAvian Sarcoma VirusesMoloney murine leukemia virusSarcoma Viruses, MurineAlpharetrovirusSarcomaSarcoma, AvianFriend murine leukemia virusGenes, ViralKirsten murine sarcoma virusCell Transformation, ViralHelper VirusesHarvey murine sarcoma virusLeukemia, ExperimentalAbelson murine leukemia virusRNA, ViralDNA, ViralRNA-Directed DNA PolymeraseBase SequenceLeukemia Virus, FelineRauscher VirusVirus ReplicationCell LineRetroviridaeRetroviridae InfectionsViral ProteinsAvian leukosis virusLeukemia Virus, BovineGammaretrovirusDefective VirusesReceptors, VirusSarcoma, ExperimentalMolecular Sequence DataSarcoma Viruses, FelineNucleic Acid HybridizationGene Products, gagGenome, ViralMoloney murine sarcoma virusSarcoma, EwingRous sarcoma virusLeukemiaSarcoma, KaposiSarcoma, SynovialChick EmbryoVirus IntegrationCell Transformation, NeoplasticRNA VirusesMink Cell Focus-Inducing VirusesAmino Acid SequenceTumor Virus InfectionsRepetitive Sequences, Nucleic AcidRetroviridae ProteinsProvirusesVirus AssemblyRecombination, GeneticGenomeVirionVirus CultivationGenetic VectorsOncogenic VirusesViral Envelope ProteinsAntigens, ViralMice, Inbred StrainsSarcoma 180MinkVaccinia virusOncogene Protein pp60(v-src)Gene Products, envLeukemia, Myeloid, AcuteCloning, MolecularGenes, gagOncogenesLeukemia Virus, Gibbon ApeRetroviridae Proteins, OncogenicTranscription, GeneticCells, CulturedMutation3T3 Cells