Hydrogen-Ion ConcentrationGastric Acidity DeterminationAcid-Base EquilibriumCarbon DioxideBicarbonatesHydrogenHydrogen BondingHydrogen PeroxidePotassiumSodiumHydrogen SulfideProtonsKineticsCalciumBuffersChloridesAcidosisIonsIon ChannelsOsmolar ConcentrationHydrochloric AcidMagnesiumAcidosis, RespiratoryMembrane PotentialsGastric JuiceAcetazolamideBiological Transport, ActiveAlkalosis, RespiratoryAcidosis, Renal TubularIon TransportPartial PressureTemperatureWaterCell Membrane PermeabilityAmmonium ChlorideModels, ChemicalThermodynamicsSecretory RateModels, BiologicalExtracellular SpaceModels, MolecularPotassium ChlorideTime FactorsSodium ChlorideMathematicsHelix (Snails)TurtlesElectrophysiologySodium BicarbonateOxygenPhosphatesCations, MonovalentProtein ConformationBinding SitesMetalsIon Channel GatingCationsProtein BindingSolutionsAcidsElectric ConductivityCations, DivalentDogsMolecular Sequence DataCobaltLactatesHypercapniaIon-Selective ElectrodesMagnetic Resonance SpectroscopyAmilorideBiological TransportSodium-Hydrogen AntiporterSpectrometry, FluorescenceOxidation-ReductionDinitrophenolsGastric MucosaAequorinManganeseElectrochemistrySulfatesPentagastrinZincIonophoresQuaternary Ammonium CompoundsEnzymesGramicidinNucleic Acid ConformationPhysicochemical PhenomenaEscherichia coliCattleEndolymphGastric AcidChemistry, PhysicalAdenosine TriphosphateAmino Acid SequenceFluorescent DyesRats, Inbred StrainsHydrogen CyanideNeuronsOsmosis