this inference from radioligand binding studies was corroborated functionally by the approximately equipotent biological effects of l-norepinephrine and l-epinephrine on camp production by luteal tissue ( respective ec50s of 282 +/- 31 and 187 +/- 66 nm ; n = 3 experiments ) .
C0028351
norepinephrine
C0014563
epinephrine