Fig. 5.

Architectonic boundaries of the rostral hypothalamus in the adult rhesus monkey show developmental origin of anatomical landmarks and hypothalamic nuclei. a, c, e Photomicrographs of coronal sections through the hypothalamus of an adult rhesus monkey stained for AChE; b, d, f maps of traced architectonic boundaries. Sections are ordered sequentially from caudal a, b to rostral (e, f). All nuclei of the rostral hypothalamus are of alar plate origin. The LA, the PaM, and the PaP are derived from hp1 while the RPa, the SO, and the SCH arise from hp2. The POA is excluded from the hypothalamus in the adult rhesus monkey according to Puelles et al. (2012). Calibration bar (2 mm) in e applies to a, c, e. For color code see Fig. 1. See list of abbreviations for complete terms