the 5-hydroxytryptamine ( 5ht ) receptor agonist , 5-methoxytryptamine , inhibited in a concentration-dependent manner the electrically-evoked release of 3h-5ht from superfused rat hypothalamic slices , with an ic50 of 560 nmol/l , without affecting the spontaneous outflow of radioactivity .
C0000589
5-methoxytryptamine
C0036751
5ht