BetainePepsin ALipotropic AgentsPepsinogensSarcosineCholineBetaine-Homocysteine S-MethyltransferaseHydrochloric AcidGastric JuicePepstatinsOsmotic PressureWater-Electrolyte BalanceRespiratory AspirationProlineSodium ChloridePentagastrinOsmolar ConcentrationGastric MucosaHydrogen-Ion ConcentrationHomocysteinePepsinogen AMethionineHomocystinuriaPancreatinAmino AcidsAmino Acid SequenceNorleucineChymosinSwineAmino Acids, DiaminoPneumonia, AspirationGastric AcidKinetics