Figure 4.

Representative images of the immature new neurons labeled with DCX (red) and/or Calret (green). The pictures represent the granule cell layer, suprapyramidal blade, of the dentate gyrus at a rostral level (coronal sections). Animals maintained in normal housing conditions (a–d) had a normal distribution of these subpopulations of immature neurons, while animals living in an enriched environment (e–h) had more immature neurons. ML, molecular layer; GCL, granule cell layer; SGZ, subgranular zone; H, hilus. Scale bars, a (for a, c, e and g) 50 μm; b (for b, d, f and h) 100 μm.