Radial glial cells located in defined walls of the postnatal lateral ventricle produce neurons that migrate to distinct layers of the olfactory bulb. (A,B) Quantification of the percentage of GFP+ newborn neurons in defined layers of the OB at 21 dpe. The OB layers are illustrated in (B). Error bars represent standard error of the mean. (C-E) Representative overviews of the distribution of newborn neurons in the OB of laterally, dorsally, and septally electroporated animals. DAPI (blue) was used as a nuclear counterstain. Scale bars: 100 μm. GCL, granule cell layer; EPO, electroporation; GL, glomerular layer; iPL, internal plexiform layer; MCL, mitral cell layer.