The results showed a dramatic reduction (over 50% decrease) in the density of DCX+ immature neurons in the MOB of GK compared with Wistar rats (261.7 ± 20.3 vs. 468.5 ± 65.9 cell/mm2, p = 0.02, Fig. 3f-h) indicating that MOB adult neurogenesis is severely impaired by T2D. The gene discussed is DCX; the disease is type 2 diabetes mellitus.