Védve vagyunk önemésztés ellen

... Synthesis of these enzymes as inactive precursors protects the exocrine cells from destructive proteolytic attack.
The pancreas protects itself against self-digestion in another way - by making a specific inhibitor, itself a protein, called pancreatic trypsin inhibitor (p. 235).
Free trypsin can activate not only trypsinogen but also three other digestive zymogens: chymotrypsinogen, procarboxypeptidase, and proelastase; trypsin inhibitor effectively prevents premature production of free proteolytic enzymes within the pancreatic cells.

Lehninger-Nelson-Cox: Principles of Biochemistry, 510.o.