Hydrochloric AcidCarboxylic AcidsAmino AcidsSodiumPneumonia, AspirationAmino Acids, CyclicNitric AcidSequence Homology, Amino AcidHydrogen-Ion ConcentrationGastric JuiceTrifluoroacetic AcidDecalcification TechniqueCountercurrent DistributionAmino Acid SequenceAcidsEsophagusFluoroacetatesSodium ChlorideStomachAmino Acid SubstitutionCloning, MolecularSulfuric AcidsAchlorhydriaGastric AcidParietal Cells, GastricSodium HydroxideSodium ChannelsGastric FistulaPepsin AChromatography, High Pressure LiquidGastric MucosaAlkalosisPentagastrinKineticsHydrolysisStructure-Activity RelationshipGas Chromatography-Mass SpectrometryAcidosisMolecular StructureAppendixDuodenumEthylenesAmino Acid Transport SystemsChemistryAzetidinecarboxylic AcidAmino Acids, EssentialMolecular Sequence DataEstersAcetatesEscherichia coliBinding SitesPyrrolidonecarboxylic AcidSequence AlignmentBase SequenceBicarbonatesMutationSpectrophotometry, UltravioletStereoisomerismModels, MolecularSpectrophotometry, AtomicSecretinRabbitsProlineDogsMagnetic Resonance SpectroscopySubstrate SpecificityAzetinesLeucineTemperatureStomach UlcerTime FactorsMutagenesis, Site-DirectedMolecular WeightAmino Acid MotifsSwinePhenazinesRecombinant ProteinsWaterProtein ConformationAmino Acids, SulfurLyasesDNA, ComplementarySodium, DietaryPeptide FragmentsElectrophoresis, Polyacrylamide GelProtein BindingBacterial ProteinsSequence Homology, Nucleic AcidPeptidesCell LineRats, Sprague-Dawley