And once it's found in those cells, the cells basically contain a special type of enzyme known as ace, which stands for angiotensin converting enzyme. And what that enzyme basically does is it converts angiotensin one into angiotensin II by basically cleaving two residues on that particular enzyme. So angiotensin one hormone then travels to lung cells and kidney cells. There an enzyme called angiotensin converting enzyme or ace, basically transforms angiotensin one into angiotensin two. Now, angiotensin two is basically one of the final products of this pathway because it itself can actually stimulate our blood vessels to constrict, and it also stimulates the increase in our blood volume and blood pressure inside our blood vessels. Now, the question is, how exactly does it achieve this?