Figure 4.

Hybridization histochemical localization of Ucn III mRNA in the rat brain. Positive hybridizing signal was most prominent in three regions of the ventral forebrain. These included the median preoptic nucleus (A and B), the rostral perifornical area that encompasses areas just lateral to the paraventricular nucleus (C), the posterior part of the bed nucleus of stria terminalis (D), and the medial amygdaloid nucleus (E). In the brainstem, positive hybridization signals were detected mainly in the superior paraolivary nucleus (F). 3V, third ventricle; ac, anterior commissure; BSTp, posterior part of the bed nucleus of stria terminalis; fx, fornix; MeA, medial nucleus of amygdala; MePO, median preoptic nucleus; OVLT, vascular organ of the lamina terminalis; opt, optic tract; PVH, paraventricular nucleus of hypothalamus; SPO, superior paraolivary nucleus; Tz, nucleus of the trapezoid body. (Scale bars, 50 μm.)