SarcomaSarcoma, EwingSarcoma, SynovialSarcoma, KaposiImmunohistochemistryAvian Sarcoma VirusesSarcoma, ExperimentalSarcoma 180Sarcoma Viruses, MurineSoft Tissue NeoplasmsHistiocytic SarcomaSarcoma, AvianSarcoma, Endometrial StromalSarcoma, MyeloidImmunoenzyme TechniquesSarcoma, Clear CellTumor Markers, BiologicalSarcoma, YoshidaKirsten murine sarcoma virusMoloney murine sarcoma virusSarcoma Viruses, FelineBone NeoplasmsLeiomyosarcomaRous sarcoma virusKi-67 AntigenOsteosarcomaSarcoma, Alveolar Soft PartRNA-Binding Protein EWSPrognosisHerpesvirus 8, HumanRhabdomyosarcomaHistocytochemistryRNA, MessengerAlpharetrovirusProto-Oncogene Protein c-fli-1Dog DiseasesKeratinsCell Transformation, ViralCell Transformation, NeoplasticHistiocytoma, Benign FibrousHistiocytoma, Malignant FibrousHarvey murine sarcoma virusTissue Array AnalysisAntibodies, MonoclonalBiopsyReverse Transcriptase Polymerase Chain ReactionLiposarcomaNeoplasm ProteinsVimentinKeratin-7AdenocarcinomaGammaretrovirusParaffin EmbeddingFatal OutcomeBlotting, WesternStaining and LabelingGene Expression Regulation, NeoplasticHemangiosarcomaOncogene Proteins, FusionS100 ProteinsCell Line, TumorSkin NeoplasmsCarcinomaTumor Suppressor Protein p53Antigens, NeoplasmVascular NeoplasmsRetroperitoneal NeoplasmsLung NeoplasmsChick EmbryoTissue FixationSarcoma 37Breast NeoplasmsBase SequenceNeoplasm StagingRetrospective StudiesTime FactorsCells, CulturedEpithelioid CellsNeoplasm Recurrence, LocalProliferating Cell Nuclear AntigenFluorescent Antibody TechniqueMolecular Sequence DataCell LineMuscle NeoplasmsIn Situ HybridizationNeoplasm TransplantationNeoplasm InvasivenessGene ExpressionDisease Models, AnimalUterine NeoplasmsSarcoma, Small CellFibrosarcomaLangerhans Cell SarcomaNeuroectodermal Tumors, Primitive, PeripheralChondrosarcomaTumor Cells, CulturedCell ProliferationCarcinoma, Squamous CellMicroscopy, ElectronMice, Nude