Gastric AcidPentagastrinGastric JuiceGastrinsGastric MucosaAcid-Base EquilibriumGastric Acidity DeterminationParietal Cells, GastricAcid-Base ImbalanceBase PairingHydrogen-Ion ConcentrationBase SequenceAchlorhydriaStomachBethanechol CompoundsSecretory RateHistamine H2 AntagonistsPeptonesHistamineDuodenal UlcerCimetidineAnti-Ulcer AgentsVagotomyKineticsOmeprazoleCytosineVagotomy, Proximal GastricNucleic AcidsGuanineFamotidineBicarbonatesStomach UlcerH(+)-K(+)-Exchanging ATPaseHydrochloric AcidCarbocysteineVagus NerveTetragastrinAntacids2-PyridinylmethylsulfinylbenzimidazolesThermodynamicsModels, MolecularMetiamideProton Pump InhibitorsGastric FistulaAlkalosisAminopyrineCatalysisHydrogen BondingMolecular Sequence DataBinding SitesAcidsPurinesAcidosisAdenineZollinger-Ellison SyndromeBethanecholSomatostatinAlkaliesModels, ChemicalRanitidinePepsin ASecretinGastric EmptyingEnterochromaffin-like CellsAlkalosis, RespiratoryRabeprazoleDNA, B-FormDNABenzoxepinsNucleic Acid ConformationAmino Acid SequencePyloric AntrumDuodenumLansoprazoleFoodXanthopterinEducation, VeterinaryProtein BindingMagnetic Resonance SpectroscopySodium BicarbonatePylorusHypermediaProtein ConformationCrystallography, X-RayGastrin-Secreting CellsUracilSchiff BasesBase CompositionSkull BaseNucleic Acid DenaturationBenzimidazolesEscherichia coliGasesGastrointestinal HormonesStomach DiseasesTemperatureSpectrophotometry, UltravioletSubstrate SpecificityHistidine DecarboxylaseThymine