Citation: Mi. Sannella et Sl. Petersen, DUAL-LABEL IN-SITU HYBRIDIZATION STUDIES PROVIDE EVIDENCE THAT LUTEINIZING-HORMONE-RELEASING HORMONE NEURONS DO NOT SYNTHESIZE MESSENGER-RIBONUCLEIC-ACID FOR MU-OPIATE, KAPPA-OPIATE, OR DELTA-OPIATE RECEPTORS, Endocrinology, 138(4), 1997, pp. 1667-1672