specifically , i.c . norepinephrine at a dose insufficient to reduce beta-endorphin-induced catecholamine secretion in vehicle-treated rats prevented beta-endorphin-induced epinephrine and norepinephrine secretion in rats whose brains had been depleted of norepinephrine by prior 6-ohda treatment .
C0014563
epinephrine
C0028351
norepinephrine