Hydrogen-Ion ConcentrationGastric Acidity DeterminationPotassiumAcid-Base EquilibriumCarbon DioxideBicarbonatesHydrogenSodiumHyperkalemiaHypokalemiaMembrane PotentialsPotassium ChannelsHydrogen BondingChloridesHydrogen PeroxideOsmolar ConcentrationCalciumPotassium IsotopesPotassium ChlorideExtracellular SpaceOuabainIon ChannelsPotassium DeficiencyHydrogen SulfideMagnesiumBiological Transport, ActiveProtonsKineticsElectrolytesCell Membrane PermeabilityBuffersElectrophysiologyAcidosisIonsTime FactorsSecretory RatePhenolphthaleinCesiumHydrochloric AcidIon TransportMicroelectrodesEndolymphElectric ConductivityAcidosis, RespiratoryAction PotentialsTetraethylammonium CompoundsSodium BicarbonateSodium ChlorideLithiumWater-Electrolyte BalanceGastric JuiceAnuraPotassium RadioisotopesWaterRubidiumDogsPotassium Channel BlockersPotassium Channels, Inwardly RectifyingNeuronsBendroflumethiazideAcidosis, Renal TubularAcetazolamideTemperaturePotassium, DietaryCyclopenthiazideBariumBufo bufoPotassium Channels, Voltage-GatedBiological TransportAmmonium ChlorideModels, BiologicalAlkalosis, RespiratoryDecapodiformesPotassium CompoundsRats, Inbred StrainsPartial PressureSodium-Potassium-Exchanging ATPaseIon Channel GatingElectric StimulationAmilorideDepression, ChemicalDose-Response Relationship, DrugDiureticsSulfatesGuinea PigsAldosteroneTetraethylammoniumHelix (Snails)StrophanthinsCations, MonovalentMusclesMathematicsTurtlesPatch-Clamp TechniquesCatsAminohippuric AcidsAbsorptionHypertonic SolutionsPhosphatesRabbits