naloxone 's augmenting effect on norepinephrine-induced constriction was abolished when the specimens were incubated with 10 ( -5 ) m normetanephrine , while naloxone ( 3 x 10 ( -5 ) m ) still augmented the constriction even when the specimens were incubated with 10 ( -5 ) m cocaine .
C0028351
norepinephrine
C0028385
normetanephrine