by using the in vivo voltammetry , it was demonstrated that an injection of clonidine induced both cardiovascular modifications ( hypotension and bradycardia ) and a decrease in the level of 5-hydroxyindolacetic acid ( 5-hiaa ) in the ventromedial b3 serotonergic ( 5-ht ) cell bodies of the medulla oblongata of the rat .
C0007226
cardiovascular
C0428977
bradycardia