Reduced BDNF levels do not affect neuronal fate differentiation. A - L, Confocal images of BrdU+ cells in slices of WT or cKO mice. The slices were triply stained for the BrdU (A, Eand I), NeuN (B, Fand J), and GFAP (C, Gand K). The merged images of the three labels (D, Hand L) demonstrate cells with neuronal (A-D) or glial (E-H) properties or neither of them (I-L). Arrows indicate the position of BrdU+ cells. Scale bar: 20 μm. M, Percentage of BrdU+ cells colabeled with NeuN or GFAP, or neither of them. 6-9 animals/group.