the differences in the degree of inhibition produced by the catecholamines were overcome ( i.e . the maximum inhibition produced by adr and na was increased to become equal to that produced by iso ) when experiments were repeated in the presence of the uptake inhibitors desmethylimipramine ( dmi ) and normetanephrine ( nmn ) , but not in the presence of an alpha-adrenoceptor antagonist ( azapetine 10 ( -7 ) m ) .
C0028351
na
C0028385
normetanephrine