hypertensive ( shr ) and nonhypertensive [ wistar-kyoto ( wky ) ; sprague-dawley ( sd ) ] strains of rats received the dipeptide sweetener aspartame ( 200 mg/kg ) or , as a positive control , tyrosine ( 200 mg/kg ) by gavage or parenterally , after a brief ( 2-h ) fast .
C0012512
dipeptide
C0003999
aspartame