in the following experiments , the role of the preoptic-suprachiasmatic area ( poa-scn ) in the control of luteinizing hormone-releasing ( lhrh ) release was examined by in vitro superfusion of either mediobasal hypothalamus ( mbh ) or mbh-poa-scn fragments obtained from cycling rats killed on various days of the estrous cycle .
C0020663
mbh
C0038866
scn