B Representative confocal images of BrdU-incorporating cells (magenta) assigned to distinct cell types of 8 week-, 14 month-, and 21 month-old hGFAPeGFP mice: rNSCs [identified by their SOX2+ (green) cell bodies residing in the SGZ with a GFAP+ radial process (cyan)]; IPCs/neuroblasts [SOX2+ (green) nuclei located to the SGZ, DCX+ cells (white) in the SGZ and GZ, respectively], and astrocytes [SOX2+ cells (green) in the hilus, GZ, and ML]. Data information: ; dotted lines border SGZ and GZ; scale bars = 50 µm. 