For additional security, the zymogens are kept away from sensitive tissues in storage vesicles called zymogen granules, and are packaged with protease inhibitors that prevent enzymes from doing damage if they become prematurely active.

另外也是为了安全性，这些酶原被安置在存储小泡中（称为“酶原颗粒”）以远离敏感组织，并与蛋白酶抑制剂一同包装，以防止它们被提前激活造成损伤。