two weeks later , rats were injected with hrp intravenously and acute hypertension was induced in awake rats by an intravenous infusion of norepinephrine ( 6 micrograms ) , epinephrine ( 6 micrograms ) or angiotensin amide ( 12 micrograms ) given over a 2-min period .
C0028351
norepinephrine
C0014563
epinephrine