studies in ovariectomized ( ovex ) rats indicated that the prolonged ovulation-blocking action of ce appeared to be related to a sustained storage and release of e2 in the brain , which in turn suppressed the release of hypothalamic luteinizing hormone-releasing hormone ( lhrh ) and pituitary luteinizing hormone ( lh ) .
C0020663
hypothalamic
C0023610
luteinizing hormone-releasing hormone