arterial plasma concentrations of norepinephrine and epinephrine , measured by a single isotopic radioenzymatic assay , rose ( from 117.9 +/- 6.7 to 201.8 +/- 13.3 pg/ml , p less than 0.001 ; and from 71.6 +/- 4.5 to 124.1 +/- 8.4 pg/ml , p less than 0.001 , respectively ) during nicotine infusion .
C0028351
norepinephrine
C0014563
epinephrine