Gastric AcidPentagastrinGastric JuiceGastrinsGastric MucosaAcid-Base EquilibriumGastric Acidity DeterminationParietal Cells, GastricAcid-Base ImbalanceBase PairingHydrogen-Ion ConcentrationAchlorhydriaStomachBethanechol CompoundsBase SequenceSecretory RateHistamine H2 AntagonistsPeptonesHistamineDuodenal UlcerCimetidineAnti-Ulcer AgentsVagotomyOmeprazoleKineticsCytosineVagotomy, Proximal GastricNucleic AcidsGuanineFamotidineBicarbonatesStomach UlcerH(+)-K(+)-Exchanging ATPaseHydrochloric AcidCarbocysteineVagus NerveTetragastrinAntacids2-PyridinylmethylsulfinylbenzimidazolesMetiamideProton Pump InhibitorsThermodynamicsGastric FistulaAlkalosisAminopyrineModels, MolecularCatalysisHydrogen BondingAcidsPurinesAcidosisZollinger-Ellison SyndromeAdenineBethanecholSomatostatinBinding SitesAlkaliesRanitidinePepsin AMolecular Sequence DataSecretinGastric EmptyingModels, ChemicalEnterochromaffin-like CellsAlkalosis, RespiratoryRabeprazoleDNA, B-FormBenzoxepinsDNAPyloric AntrumDuodenumLansoprazoleXanthopterinNucleic Acid ConformationFoodEducation, VeterinarySodium BicarbonatePylorusGastrin-Secreting CellsHypermediaUracilMagnetic Resonance SpectroscopySchiff BasesSkull BaseProtein BindingCrystallography, X-RayBase CompositionAmino Acid SequenceProtein ConformationNucleic Acid DenaturationBenzimidazolesGastrointestinal HormonesStomach DiseasesGasesSpectrophotometry, UltravioletHistidine DecarboxylaseReceptors, CholecystokininThymineDepression, ChemicalTemperature