A–C) Caudal to rostral sections stained with an antibody against substance P (visualized with a diaminobenzidine reaction). Staining is densest in the caudal and medial pulvinar (Pcm). Little staining is observed in the lateral pulvinar (Pl). Scale = 100 μm and applies to all panels. dLGN, dorsal lateral geniculate nucleus, MGN, medial geniculate nucleus, OT, optic tract, PT, pretectum. Methods as in Masterson et al. (2010).