1 #Protein HCI #Pepsin Pancreas НСО3 Amino- and dipeptidases #Carboxypeptidase #trypsin #chymotrypsin elastase Proteins Pepsin НСОз Polypeptides Tri- and dipeptides Amino acids (AA) H* symport Nat symport HCI Pepsinogen 2 Carboxypeptidases Trypsin, chymotrypsin, elastase Mucosal cell Hydrolysis AA Amino- and dipeptidases Cationic AA Neutral AA Portal blood Anionic AA Metabolism