Pepsin ADigestionPepsinogensGastric JuicePepstatinsTrypsinRespiratory AspirationPancreatinPentagastrinAmino Acid SequenceHydrogen-Ion ConcentrationPeptide FragmentsChymotrypsinMolecular WeightMolecular Sequence DataAmino AcidsPepsinogen AGastric MucosaCattleElectrophoresis, Polyacrylamide GelRumenNorleucineChymosinSwineAnimal FeedHydrolysisCyanogen BromideStomachCollagenPapainAspartic Acid EndopeptidasesChemistryKineticsChromatography, GelChemical PhenomenaPneumonia, AspirationSecretory RatePeptide HydrolasesMicrococcal NucleaseAbomasumGastric AcidChromatography, High Pressure Liquid