A-III | definition of A-III by Medical dictionary
angiotensin III (redirected from A-III)
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an·gi·o·ten·sin III (an'jē-ō-ten'sin),
A vasoactive heptapeptide less potent than angiotensin II on vascular smooth muscle but approximately equally active in promoting aldosterone secretion.
angiotensin III A heptapeptide derived from angiotensin II after angiotensinases in red blood cells and in vascular beds cleave the N-terminal aspartame. Angiotensin III has 40% of A-II’s pressor activity and 100% of its aldosterone-producing activity.