in order to study the role of the serotoninergic innervation of the hypothalamic suprachiasmatic nucleus ( scn ) in the development of the circadian rhythm of corticosterone 5,7-dihydroxytryptamine ( 5,7-dht ) selectively destroying the serotoninergic structures was injected into the cell group of 16-day-old male rats prior to the appearance of the corticosterone rhythm .
C0020663
hypothalamic
C0038866
suprachiasmatic nucleus