GADD45b is expressed in pyramidal and GABAergic cells, and not highly expressed in glial cells, in the post-mortem prefrontal cortex. In (a), is immunofluorescence showing colocalization of GADD45b (red) with a marker for GABAergic cells, GAD65/67 (Millipore, AB1511) (green). In (b), is immunofluorescence showing colocalization of GADD45b (red) with a marker for pyramidal cells, VGLUT2 (Abcam, ab79157) (green). In (c), is immunofluorescence showing colocalization of GADD45b (red) with a marker for glial cells, S100β (Sigma, S2532) (green).