upon an examination of three hypothalamic tissue boundaries [ the mbh , the poa-suprachiasmatic nuclei ( poa-scn ) , and the median eminence ( me ) ] to better delineate the in vitro site of action of p4 on lhrh release , it was demonstrated that the mbh responded upon p4 infusion , whereas the poa-scn was unable to do so .
C0020663
hypothalamic
C0023610
lhrh