On top of that, the brush border found in the dudenum also contains proteolytic enzymes that are attached onto the membrane of denterasides. So when those macromolecules approach these microvilli of anterosos, that membrane of these intellicides contains these proteolytic enzymes that can break down the macromolecules into smaller units. Now, in addition, we have specialized types of exocrine organs, exocrine glands in the human body, and one is aropankreas. So the pancreas basically produces its own proteolytic enzymes and it mixes those proteolytic enzymes in a solution that is basic. It consists of bicarbonate. And the reason it's basic is because all the enzymes found in the small intestine only function at a PH that is basic at a PH that is equal to about 8.5.