Gastric AcidPentagastrinGastric JuiceGastrinsGastric MucosaAcid-Base EquilibriumGastric Acidity DeterminationParietal Cells, GastricAcid-Base ImbalanceHydrogen-Ion ConcentrationBase PairingBase SequenceAchlorhydriaStomachBethanechol CompoundsSecretory RateHistamine H2 AntagonistsPeptonesHistamineDuodenal UlcerCimetidineKineticsAnti-Ulcer AgentsVagotomyOmeprazoleCytosineVagotomy, Proximal GastricNucleic AcidsGuanineFamotidineBicarbonatesHydrochloric AcidComplex MixturesStomach UlcerH(+)-K(+)-Exchanging ATPaseCarbocysteineVagus NerveTetragastrinThermodynamicsAntacids2-PyridinylmethylsulfinylbenzimidazolesMetiamideProton Pump InhibitorsModels, MolecularGastric FistulaAlkalosisAminopyrineCatalysisHydrogen BondingAcidsMolecular Sequence DataBinding SitesPurinesAcidosisAdenineZollinger-Ellison SyndromeModels, ChemicalBethanecholSomatostatinAlkaliesPepsin ARanitidineSecretinGastric EmptyingEnterochromaffin-like CellsAlkalosis, RespiratoryRabeprazoleDNAMagnetic Resonance SpectroscopyDNA, B-FormBenzoxepinsDuodenumPyloric AntrumNucleic Acid ConformationAmino Acid SequenceLansoprazoleFoodXanthopterinProtein BindingSodium BicarbonateEducation, VeterinaryPylorusProtein ConformationTemperatureUracilGastrin-Secreting CellsSchiff BasesHypermediaCrystallography, X-RaySpectrophotometry, UltravioletBase CompositionSkull BaseGasesNucleic Acid DenaturationEscherichia coliWaterMolecular ConformationBenzimidazolesMolecular StructureGastrointestinal Hormones