Fig. 4.

Colocalization of CCK-induced pERK in catecholaminergic neurons of the rat NTS. Lower (A–A′′)- and higher (B–B′′)-power confocal image stacks (15 × 1.5 μm) were taken separately for pERK immunoreactivity (red) and tyrosine hydroxylase (TH) immunoreactivity (green), and merged images are shown on the right. Scale bar = 50 μm for A–A′′; scale bar = 25 μm for B–B′′.