title: Letter: Enteropancreatic circulation of digestive enzyme.
mesh_terms: D000818:Animals; D002918:Chymotrypsin / Q000097:blood; D007413:Intestinal Mucosa / Q000378:metabolism; D010179:Pancreas / Q000378:metabolism; D010189:Pancreatic Juice / Q000378:metabolism*; D014357:Trypsin / Q000097:blood
chemical_list: D002918:Chymotrypsin; D014357:Trypsin