cellulose: a polysaccharide that is the chief constituent of all plant tissues and fibers
part: something determined in relation to something that includes it
ace inhibitor: an antihypertensive drug that blocks the formation of angiotensin II in the kidney, leading to relaxation of the arteries; promotes the excretion of salt and water by inhibiting the activity of the angiotensin converting enzyme; also used to treat congestive heart failure