we examined responses of arterial plasma levels of the sympathetic neurotransmitter , norepinephrine ( ne ) , of the adrenomedullary hormone , epinephrine ( e ) , and of the intraneuronal ne metabolite , dihydroxyphenylglycol ( dhpg ) , after intravenous administration of the alpha-2 adrenoceptor antagonist , yohimbine , in conscious , freely-moving juvenile ( 4-week old ) or mature ( 12-week old ) rats with spontaneous hypertension ( shrs ) and their normotensive wistar-kyoto ( wky ) controls .
C0014563
epinephrine
C0028351
ne