propranolol , but not placebo , acutely decreased 1-norepinephrine contents from 2.24 +/- 1.33 ( mean +/- sd ) to 1.31 +/- 0.74 microgram/liter , p less than 0.001 , and epinephrine contents from 0.97 +/- 0.42 to 0.74 +/- 0.42 microgram/liter , p less than 0.02 .
C0028351
norepinephrine
C0014563
epinephrine