Figure 5.

Kisspeptin expression in anteroventral periventricular and preoptic nuclei. The changes in kisspeptin (KP) expression in females (black line) and males (green line) were traced through the neonatal/prepubertal periods, the pubertal period, and the adulthood in previous studies. Until the second postnatal week, the expression of KP in the anteroventral periventricular and periventricular preoptic nucleus (AVPV/PeN) was not detectable. After KP expression becomes detectable in this region, a distinct sexual dimorphism persists throughout the postnatal life.