the effect of serotonin ( 5-ht ) deficiency on hypothalamic-pituitary-adrenal ( hpa ) activity was investigated by using 5,7-dihydroxytryptamine ( 5,7-dht ) for the selective destruction of central 5-ht neurons , and corticosterone response to suppression by dexamethasone as the index of hpa activity .
C0020635
deficiency
C0032002
hpa