there are two types of enzymes in tissues leading to angiotensin formation : a ) those resulting in the formation of angiotensin i , such as renin and cathepsin d , the presence of which is now well established for brain tissue and b ) those leading to the direct formation of angiotensin ii without the angiotensin i step , such as cathepsin g and tonin .
C0003018
angiotensin
C0003009
angiotensin ii