subcutaneous administration of dom resulted in elevated prl levels which could be further augmented by iv infusion of ot ( at 0.01 or 0.1 microgram ot/kg.min ) or partially , but significantly , reduced by pretreatment with anti-ot antiserum ( 0.75 ml ) indicating that under conditions of da blockade , ot ( which has little prf activity during conditions of normal dopaminergic tone ) can stimulate prl secretion by a direct pituitary action .
C0013030
da
C0282151
dopaminergic