B Representative images of BrdU-incorporating newly-generated cells in control and running hGFAPeGFP animals. BrdU+ cells (magenta) were assigned to distinct cell types: rNSCs [identified by their SOX2+ (cyan) cell bodies residing in the SGZ with a GFAP+ radial process (green)]; IPCs/neuroblasts [SOX2+ (cyan) nuclei located to the SGZ, DCX+ cells (white) in the SGZ and GZ, respectively], and astrocytes [SOX2+ cells (cyan) in the hilus, GZ, and ML]. Arrows mark newly generated neuronally committed cells (BrdU+/DCX+), while arrowheads indicate BrdU+ astrocytes (SOX2+). Data information: dotted lines border SGZ and GZ; scale bars = 50 µm. 