Table 1.

KOR Internalization in GnRH and KNDy Neurons After nor-BNI Pretreatment

	No. of Internalized KOR Particles at 12 min
	Veh	NKB	NKB Plus nor-BNI
MBH GnRH	15.41 ± 0.49	22.34 ± 1.55	8.23 ± 1.18
KNDy	4.60 ± 0.79	15.03 ± 1.32	1.51 ± 0.62

Numbers of KOR-ir particles in MBH GnRH and KNDy cells during times corresponding with pulse termination in Veh, NKB, and nor-BNI ewes (bold). Numbers of KOR-ir particles for Veh and NKB groups are the same as displayed in Fig. 3I and Fig. 4I. Data are expressed as means ± SEM.