Ключевые слова: absorption, acid, acids, amino, border, brush, chyme, chymotrypsin, denaturation, digestion, dipeptides, duodenum, enterocytes, enzymes, gastric, hydrochloric, illustration, intestine, microvilli, pancreatic, pepsin, peptidases, polypeptides, proteases, protein, small, stomach, transporters, tripeptides, trypsin, villi,