HistamineReceptors, Histamine H1Histamine ReleaseReceptors, Histamine H2Receptors, HistamineHistamine AntagonistsHistamine AgonistsHistamine H1 AntagonistsReceptors, Histamine H3Histamine H2 AntagonistsHistamine N-MethyltransferaseIndicator Dilution TechniquesPyrilamineMethylhistaminesHistidine DecarboxylaseDimapritHistamine H3 AntagonistsHistamine AgentsCimetidineChlorpheniramineMetiamideDiphenhydramineMast Cellsp-Methoxy-N-methylphenethylamineBasophilsRadioisotope Dilution TechniqueGuinea PigsImpromidineThioureaDye Dilution TechniqueAnaphylaxisBurimamideHistamine H1 Antagonists, Non-SedatingBronchial Provocation TestsRanitidineMicrobial Sensitivity TestsImmunoglobulin EDose-Response Relationship, DrugTriprolidineCromolyn SodiumPruritusTerfenadineGastric JuiceGastric MucosaFamotidineAmine Oxidase (Copper-Containing)SRS-AGastric AcidCetirizineMethacholine CompoundsPentagastrinBronchiKetotifenTripelennamineAnti-Allergic AgentsMuscle, SmoothAirway ResistanceTracheaBronchoconstrictionAnti-Bacterial AgentsTime FactorsEnterochromaffin-like CellsMethylhistidinesCapillary PermeabilityStomachCulture MediaSerotoninPassive Cutaneous AnaphylaxisCells, CulturedGastrinsPiperidinesMucunaImidazolesMuscle ContractionNasal Provocation TestsGuanidinesAsthmaBronchial SpasmBradykininKineticsDogsStimulation, ChemicalBody WaterLungHypersensitivityIleumGastric FistulaParietal Cells, GastricAgarInjections, IntradermalRabbitsHypersensitivity, ImmediateClemastineEnterochromaffin CellsAtropineCyclic AMPUrticariaSkinSensitivity and SpecificityAstemizole