SarcomaImmunohistochemistrySarcoma, EwingSarcoma, SynovialSarcoma, KaposiAvian Sarcoma VirusesSarcoma, ExperimentalSarcoma 180Sarcoma Viruses, MurineSoft Tissue NeoplasmsSarcoma, AvianHistiocytic SarcomaSarcoma, MyeloidSarcoma, Endometrial StromalSarcoma, Clear CellSarcoma, YoshidaKirsten murine sarcoma virusImmunoenzyme TechniquesMoloney murine sarcoma virusSarcoma Viruses, FelineTumor Markers, BiologicalRNA, MessengerReverse Transcriptase Polymerase Chain ReactionBone NeoplasmsRous sarcoma virusLeiomyosarcomaIn Situ HybridizationBlotting, WesternOsteosarcomaSarcoma, Alveolar Soft PartPrognosisRNA-Binding Protein EWSGene Expression Regulation, NeoplasticHerpesvirus 8, HumanAlpharetrovirusTissue Array AnalysisCell Line, TumorCell Transformation, ViralProto-Oncogene Protein c-fli-1Harvey murine sarcoma virusRhabdomyosarcomaCell Transformation, NeoplasticLiposarcomaNeoplasm ProteinsKi-67 AntigenHistiocytoma, Malignant FibrousDisease Models, AnimalGammaretrovirusGene ExpressionBiopsyOncogene Proteins, FusionCells, CulturedRats, Sprague-DawleyIn Situ Hybridization, FluorescenceUp-RegulationHistiocytoma, Benign FibrousNeoplasm StagingCell ProliferationPolymerase Chain ReactionTime FactorsBase SequenceApoptosisAdenocarcinomaMice, Inbred C57BLChick EmbryoParaffin EmbeddingSarcoma 37Skin NeoplasmsSarcoma, Small CellAntibodies, MonoclonalBreast NeoplasmsVascular NeoplasmsFluorescent Antibody Technique, IndirectCell LineLung NeoplasmsRetroperitoneal NeoplasmsNeoplasm InvasivenessGene Expression ProfilingMolecular Sequence DataMutationLangerhans Cell SarcomaNeoplasm Recurrence, LocalTumor Suppressor Protein p53Survival AnalysisAntigens, NeoplasmHemangiosarcomaFibroblastsNeoplasm TransplantationDisease ProgressionMice, NudeTumor Cells, CulturedMuscle NeoplasmsFatal OutcomeTreatment OutcomeCarcinomaNeoplasm MetastasisRetrospective StudiesIfosfamideReceptor, erbB-2Dog Diseases