FIG. 5.

Localization of GnIH-ir terminals in the median eminence of the rhesus macaque. Fluorescence photomicrographs show few GnIH fibers (green) located in the median eminence, where an abundance of GnRH fibers is noted (red). Arrows indicate GnIH fibers; arrowheads indicate GnRH neurons in the MBH. Box in A demonstrates the approximate position of photomicrographs B–D. 3V, third ventricle; ARC, arcuate nucleus; DMN, dorsomedial nucleus of the hypothalamus; LH, lateral hypothalamus; ME, median eminence; opt, optic tract; VMH, ventromedial hypothalamus. Bars = 100 μm.