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Effects of phytochemicals on angiotensin converting enzyme (ACE) concentration (a) and ACE activity (b) in brain. Control: 0.9% saline oral administration; Perindopril: oral administration of 1 mg perindopril/kg body weight; Curcumin, Quercetin, Saponin: oral administration of 50 mg of each phytochemical/kg body weight; Different letters indicate significant differences at α = 0.05 as determined by Duncan’s multiple range test.
