Figure 2

Immunohistochemistry staining. a: Ki67 staining of the septal part of the dentate gyrus subgranular zone. Two clusters of proliferating cells, indicated in brown, are located in the subgranular zone (gcl: granule cell layer; hi: hilus). Scale bar = 20 μm. b: DCX positive cells (brown) in the septal part of the dentate gyrus subgranular zone. The DCX immunostaining is counterstained with haematoxylin. Young neurons extend long dendrites into the granular and molecular cell layer. Scale bar = 20 μm c: Condensed chromatin of a pyknotic cell in the subgranular zone is visualized with Giemsa staining in plastic embedded tissue. Arrow indicates a pyknotic cell. Scale bar = 5 μm d: Qualitative comparison of the amount of young neurons (stained in brown) in the subgranular zone of a baseline wood mouse (d) and a running wood mouse (e). No difference in the number of DCX positive cells can be seen. Scale bar = 20 μm.