SarcomaSarcoma, EwingSarcoma, SynovialSarcoma, KaposiSarcoma, ExperimentalAvian Sarcoma VirusesSarcoma 180Sarcoma Viruses, MurineTumor Markers, BiologicalSoft Tissue NeoplasmsTumor Necrosis Factor-alphaCell Line, TumorTumor BurdenSarcoma, AvianHistiocytic SarcomaNeoplasms, ExperimentalWilms TumorSarcoma, MyeloidSarcoma, Endometrial StromalSarcoma, Clear CellBone NeoplasmsGenes, Tumor SuppressorTumor Suppressor Protein p53Carcinoid TumorSarcoma, YoshidaKirsten murine sarcoma virusCell Transformation, NeoplasticBrain NeoplasmsTumor Suppressor ProteinsNeuroendocrine TumorsMoloney murine sarcoma virusTumor MicroenvironmentOsteosarcomaNeoplasm MetastasisSarcoma Viruses, FelineNeovascularization, PathologicMammary Neoplasms, ExperimentalFibrosarcomaGastrointestinal Stromal TumorsTransplantation, HeterologousAntigens, NeoplasmRous sarcoma virusAdenocarcinomaMice, Inbred BALB CCell ProliferationXenograft Model Antitumor AssaysSkin NeoplasmsNeoplasm ProteinsRhabdomyosarcomaNeoplasmsCell DivisionCell LineRNA-Binding Protein EWSImmunohistochemistryRNA, MessengerKidney NeoplasmsNeoplasm StagingSarcoma, Alveolar Soft PartNeoplasm Recurrence, LocalCell Transformation, ViralDNA, NeoplasmLiver NeoplasmsTreatment OutcomeCarcinoma, Ehrlich TumorMutationReverse Transcriptase Polymerase Chain ReactionMice, Inbred C57BLBase SequenceLeiomyosarcomaColonic NeoplasmsTime FactorsProto-Oncogene Protein c-fli-1Mice, SCIDHerpesvirus 8, HumanMice, NudeCombined Modality TherapySignal TransductionLiposarcomaOvarian NeoplasmsNeuroectodermal Tumors, Primitive, PeripheralNeuroectodermal Tumors, PrimitiveAntibodies, MonoclonalNeoplasm TransplantationAlpharetrovirusGliomaRhabdoid TumorHistiocytoma, Benign FibrousMolecular Sequence DataNeuroectodermal TumorsGene Expression Regulation, NeoplasticTomography, X-Ray ComputedDisease ProgressionTransfectionRetrospective StudiesCells, CulturedHarvey murine sarcoma virusGammaretrovirusHistiocytoma, Malignant FibrousDoxorubicinPancreatic Neoplasms