HistamineReceptors, Histamine H3Receptors, Histamine H1Gastric JuiceReceptors, Histamine H2Histamine H1 AntagonistsHistamine H2 AntagonistsHistamine AgonistsReceptors, HistamineHistamine AntagonistsPentagastrinHistamine H3 AntagonistsGastric AcidSecretory RateGastric MucosaPepsin ACimetidineHistamine ReleaseMethylhistaminesGastrinsMetiamideStomach UlcerChlorpheniramineThioureaStomachDimapritPylorusDuodenal UlcerGastric Acidity DeterminationLiver ExtractsGastric FistulaVagotomyBetazoleRanitidineDuodenumSecretinDose-Response Relationship, DrugMethacholine CompoundsAtropineDepression, ChemicalAnti-Ulcer AgentsImpromidineDiphenhydramineBethanechol CompoundsFamotidineStimulation, ChemicalHistamine N-MethyltransferaseHistamine AgentsDogsDuodenogastric RefluxPyrilaminePiperidinesArbaprostilGuinea PigsBurimamideGastrointestinal HormonesHistidine DecarboxylaseHistamine H1 Antagonists, Non-SedatingHydrochloric AcidGlucose Solution, HypertonicDoxepinProstaglandins EAchlorhydriaIsothiuroniumGastric EmptyingPancreatic JuiceRats, Inbred StrainsRats, WistarTime FactorsGuanidinesImmersionVagus NerveZollinger-Ellison SyndromeFoodProstaglandins DIndomethacinTripelennamineParasympatholyticsIntubation, GastrointestinalRadioligand AssayHydrogen-Ion ConcentrationCatsp-Methoxy-N-methylphenethylamineSomatostatinReceptors, G-Protein-CoupledHexosesTerfenadineMast CellsHormone AntagonistsRats, Sprague-DawleyTriprolidineCells, CulturedImidazolesCarnosineInsulinPeptic UlcerFuransKetotifenMucusOmeprazole