SarcomaSarcoma, EwingSarcoma, SynovialSarcoma, KaposiAvian Sarcoma VirusesSarcoma, ExperimentalSarcoma 180Sarcoma Viruses, MurineSoft Tissue NeoplasmsSarcoma, AvianHistiocytic SarcomaSarcoma, MyeloidSarcoma, Endometrial StromalSarcoma, Clear CellSarcoma, YoshidaKirsten murine sarcoma virusMoloney murine sarcoma virusSarcoma Viruses, FelineRous sarcoma virusBone NeoplasmsSarcoma, Alveolar Soft PartLeiomyosarcomaRNA-Binding Protein EWSOsteosarcomaHerpesvirus 8, HumanAlpharetrovirusCell Transformation, ViralProto-Oncogene Protein c-fli-1Harvey murine sarcoma virusGammaretrovirusRhabdomyosarcomaHistiocytoma, Malignant FibrousLiposarcomaCell Transformation, NeoplasticOncogene Proteins, FusionSarcoma 37Histiocytoma, Benign FibrousSarcoma, Small CellLangerhans Cell SarcomaVascular NeoplasmsRetroperitoneal NeoplasmsChick EmbryoIfosfamideDendritic Cell Sarcoma, FollicularHelper VirusesMuscle NeoplasmsAvian leukosis virusHemangiosarcomaRetroviridaeFibrosarcomaNeuroectodermal Tumors, Primitive, PeripheralMoloney murine leukemia virusExtremitiesViral ProteinsGenes, ViralImmunohistochemistryChondrosarcomaBase SequenceCell LineDoxorubicinAcquired Immunodeficiency SyndromeRNA-Binding Protein FUSDendritic Cell Sarcoma, InterdigitatingRetroviridae ProteinsOncogenesMethylcholanthreneOncogenic VirusesDNA, ViralNeoplasm Recurrence, LocalNeoplasm TransplantationNeuroectodermal TumorsCombined Modality TherapyRNA, ViralMesnaHemangioendotheliomaTranslocation, GeneticSkin NeoplasmsFatal OutcomeDefective VirusesFibroblastsTreatment OutcomeLiposarcoma, MyxoidPrognosisNeoplasms, ExperimentalChemotherapy, Cancer, Regional PerfusionHistiocytic Disorders, MalignantNeoplasms, Connective TissueNeuroectodermal Tumors, PrimitiveUterine NeoplasmsCell Line, TumorEpsilonretrovirusQuailGene Products, gagFemoral NeoplasmsMolecular Sequence DataCells, CulturedAntineoplastic AgentsMutationRetrospective StudiesMesenchymoma