Fig. S4.

OPN5 is not found within dopaminergic neurons within the light-sensitive region of the diencephalon. The OPN5 neurons in the caudal diencephalon are in close proximity to the rostral extent of the dopaminergic neurons of the posterior tuberculum. OPN5-positive neurons (i, Left) and TH-positive neurons (i, Right) are found in close proximity to each other within the caudal diencephalon. The TH-positive neurons are the rostral-most members of the dopaminergic neurons of the posterior tuberculum (pt) shown more caudally in the same animal (ii; magnification in iii). (Scale bars, 100 μm.)