Avian leukosis virusAlpharetrovirusAvian Sarcoma VirusesAvian LeukosisSarcoma, AvianSarcomaAvian ProteinsChickensChick EmbryoReceptors, VirusQuailBursa of FabriciusCell Transformation, ViralReticuloendotheliosis virusGenes, ViralSarcoma, EwingDefective VirusesEnzootic Bovine LeukosisDNA, ViralPoultry DiseasesRNA, ViralSarcoma, KaposiVirus ReplicationSarcoma, SynovialSarcoma, ExperimentalAvian myeloblastosis virusCoturnixViral ProteinsCell LineMolecular Sequence DataRNA-Directed DNA PolymeraseBase SequenceCell Transformation, NeoplasticRetroviridae ProteinsRetroviridaeGenes, gagVirus IntegrationRNA VirusesSarcoma 180Culture TechniquesAmino Acid SequenceHelper VirusesSarcoma Viruses, MurineGene Products, gagGene Products, envRecombination, GeneticRepetitive Sequences, Nucleic AcidAntigens, ViralGenes, polVaccinia virusOncogenesOncogene Protein pp60(v-src)Nucleic Acid HybridizationFibroblasts