The results were as follows: microinjection of L Arg, NO precursor, into parabrachial nuclei (NPB) resulted in a marked decrease in the mean arterial pressure (MAP), but the heart rate had no significant change.

• 结果如下 :臂旁核 (NPB)内微量注射 NO前体 L -精氨酸 (L - Arg) ,引起平均动脉压 (MAP)显著下降 ,但对心率无明显影响。