Fig. 2.

Transverse sections through the thalamic and tuberal nuclei of the diencephalon. (A-A″) Photomicrographs of a transverse section of the diencephalon showing double-labelled cells (5-HT in red, GABA in green) in the thalamus (white arrows). Note the presence of a gap without labelled cells between the thalamus and the prethalamus that may correspond to the zona limitans intrathalamica (Zli). Note the absence of double-labelled cells in the dorsal tuberal subgroup of the hypothalamus (arrowheads). (B-B″) Photomicrographs of a transverse section of the dorsal diencephalon showing double-labelled cells in the thalamus (white arrows). Stars indicate the ventricle. All photomicrographs are Z-stack projections from confocal images. Scale bars: 40 µm.