Histamine ReleaseMast CellsReceptors, HistamineHistamineReceptors, Histamine H1Receptors, Histamine H2Histamine AntagonistsHistamine AgonistsHistamine H1 AntagonistsReceptors, Histamine H3PyrilamineMethylhistaminesHistamine H2 AntagonistsDimapritCimetidineDiphenhydramineImpromidineMetiamideChlorpheniramineCell DegranulationHistidine DecarboxylaseTerfenadinep-Methoxy-N-methylphenethylamineTriprolidineTryptasesAstemizoleChymasesHistamine H3 AntagonistsCetirizineReceptors, IgEHistamine N-MethyltransferaseThioureaImmunoglobulin EBurimamideKetotifenAntazolineMastocytosisRanitidineHistamine H1 Antagonists, Non-SedatingCromolyn SodiumAnaphylaxisDibenzylchlorethamineGuinea PigsBasophilsReceptors, G-Protein-CoupledFamotidineCells, CulturedProto-Oncogene Proteins c-kitSialadenitisHypersensitivityPheniramineMastocytosis, SystemicSerine EndopeptidasesPassive Cutaneous AnaphylaxisStem Cell FactorPeritoneal CavityPromethazineSkinDose-Response Relationship, DrugMustard CompoundsPruritusbeta-N-AcetylhexosaminidasesLeukemia, Mast-CellMuscle, SmoothClemastineCarboxypeptidases ACytoplasmic GranulesMice, Inbred C57BLCell CountPiperidinesImidazolesThioxanthenesHistamine AgentsAnti-Allergic AgentsTracheaMast-Cell SarcomaTolonium ChlorideRNA, MessengerSignal TransductionUrticaria Pigmentosa