Figure 4From: Visualization of odor-induced neuronal activity by immediate early gene expressionOdorant exposure induced activity-dependent gene expression in different brain regions. Odorant exposure induced expression of c-fos (A-F) and Npas4 (A’-F’) in the AON (arrows, A-B’), the PC (arrows, C-D’) and the hippocampus (arrows, E-F'). DG, Dentate gyrus. Scale bar: 200 μm.Back to article page