Mast-Cell SarcomaSarcoma, Clear CellMast CellsLangerhans Cell SarcomaSarcomaDendritic Cell Sarcoma, FollicularSarcoma, Small CellDendritic Cell Sarcoma, InterdigitatingStem CellsSarcoma, SynovialHematopoietic Stem CellsHistiocytic SarcomaSoft Tissue NeoplasmsStem Cell TransplantationEmbryonic Stem CellsSarcoma, EwingAdult Stem CellsSarcoma, ExperimentalSarcoma, KaposiPluripotent Stem CellsAvian Sarcoma VirusesCell DegranulationStem Cell FactorCell DifferentiationHematopoietic Stem Cell TransplantationStem Cell NicheSarcoma 180Neural Stem CellsInduced Pluripotent Stem CellsHistamine ReleaseOncogene Proteins, FusionDendritic Cells, FollicularMultipotent Stem CellsMesenchymal Stem Cell TransplantationNephroma, MesoblasticLymphoma, Non-HodgkinTryptasesMesenchymal Stromal CellsCells, CulturedChymasesReceptors, IgEImmunohistochemistrySarcoma Viruses, MurineCell Transdifferentiationp-Methoxy-N-methylphenethylamineLeiomyosarcomaRNA-Binding Protein EWSProto-Oncogene Proteins c-kitLymphoma, Large B-Cell, DiffuseCell LineagePeripheral Nervous System NeoplasmsMice, Inbred C57BLImmunoglobulin EBone Marrow CellsStem Cell ResearchMastocytosisSarcoma, AvianCell ProliferationPlant StemsMicrophthalmia-Associated Transcription FactorFetal Stem CellsReverse Transcriptase Polymerase Chain ReactionKidney NeoplasmsV(D)J RecombinationWilms TumorSplenic NeoplasmsEye NeoplasmsSarcoma, MyeloidHematopoietic Stem Cell MobilizationCell CountCell LineNeoplastic Stem CellsMice, Inbred StrainsTranslocation, GeneticTranscription FactorsTumor Markers, BiologicalSarcoma, Endometrial StromalCromolyn SodiumSignal TransductionFatal OutcomeFlow CytometryCell SeparationMelanomaHistamine