Dendritic development is impaired in cKO mice in standard condition, but not in enriched condition. A - F, Photomicrographs of DCX+ cells in the DG of WT (A, Band C) and cKO (D, Eand F). The mice were maintained in either standard conditions (A, B, Dand E) or enriched conditions (Cand F). Scale bar: 80 μm in Aor 20 μm in B. G-H, Quantification of total dendritic length (G) and dendritic complexity (H) of DCX+ cells in WT and cKO mice (Mean ± SEM; 6 animals/group). *, P < 0.05.