a stock solution ( 0.1mg/ml of norepinephrine , 0.1mg/ml of epinephrine and 2.0mg/ml of dopamine ) was stored in 0.2n ch3cooh at 4 degrees c , and was diluted at 1/5,000-1/40,000 when needed .
C0028351
norepinephrine
C0014563
epinephrine