So this is the method by which our body basically controls the amount of sugar found inside our blood, as well as the concentration of amino acids and fats. Now, the last two cells are the delta cells and the gamma cells. So the delta cells are the cells that basically release a special type of peptide hormone known as Arsomatostatin, which is the protein that we mentioned earlier that inhibits our glucagon. Now, Somatostatin doesn't only inhibit glucagon, it also actually inhibits our insulin. So Somatostatin has a wide range of functions, and one of its function is to inhibit the release of both glucagon and our insulin. And finally, we also have a type of eyelid of Langerhan, a type of cell in that region known as gamma cells.