administration of phentolamine to intact dogs caused a fall in mean arterial pressure ( 23 +/- 5 % ) and tpr ( 34 +/- 5.4 % ) and an endogenous increase in plasma ne ( 2,987 +/- 905 pg/ml ) and epinephrine ( 584 +/- 92 pg/ml ) .
C0020649
fall in
C0028351
ne