MastocytomaMastocytosis, CutaneousMast-Cell SarcomaMast CellsDog DiseasesMastocytosisLeukemia, Basophilic, AcutePathology, VeterinaryProto-Oncogene Proteins c-kitDogsSkin NeoplasmsReceptors, IgETryptasesMastocytoma, SkinHistiocytoma, Benign FibrousSkinGranulosa Cell TumorVenereal Tumors, VeterinaryGiant Cell Tumor of BoneCell DegranulationGiant Cell TumorsHistamine ReleaseCat DiseasesNeoplasms, Germ Cell and EmbryonalGranular Cell TumorHistiocytic Disorders, MalignantTesticular NeoplasmsSertoli Cell TumorChymasesp-Methoxy-N-methylphenethylamineLeydig Cell TumorImmunohistochemistryNucleolus Organizer RegionGerminomaImmunoglobulin EHistocytochemistrySeminomaCromolyn SodiumTumor Markers, BiologicalTumor Necrosis Factor-alphaHistamineAnaphylaxisDNA, NeoplasmSertoli-Leydig Cell TumorMastocytosis, SystemicSerine EndopeptidasesStem Cell FactorCell Line, TumorEndodermal Sinus TumorAdenoma, Islet CellPeritoneal CavityCells, CulturedRetrospective StudiesLeukemia, Mast-CellPassive Cutaneous AnaphylaxisMice, Inbred C57BLTumor BurdenPrognosisbeta-N-AcetylhexosaminidasesCell CountMice, Inbred BALB CCytoplasmic Granules