Expression of pcdh19, pcdh17 and cdh6 in the posterior preoptic areas, epithalamus, ventral thalamus, and pretectum. Top panel images show low magnifications of the brain from adjacent sections at a level indicated in Figure 1. B–D are higher magnifications of the posterior preoptic areas and the suprachiasmatic nucleus (SC) shown in the top pannels. The remaining panels are from sections 100–150 μm posterior to those shown in B–D, showing epithalamus and ventral thalamus. Arrowheads in H–J indicate pigmented epithelium. For other abbreviations, see the list. Scale bar = 200 μm for the top panels, 50 μm for the lower panels (B–J have the same magnification).