Micrograph of coronal sections of E17 mouse cerebral cortices electroporated at E14 co-electroporated with mCherry expressing vector and HA-Cstb or R68X, and analyzed 3 dpe. Immunostaining with RFP to identify electroporated cells and GFP to identify migrating interneurons in the GAD65-GFP transgenic mouse line. Ventricle (V) is indicated. The dashed lines represent the apical surface of the ventricles. Quantification of the total number of GAD65-GFP interneurons/ cortical area (µm2) in (N). Data shown as Z-scores relative to the mean of GFP control vector. Nuclei (blue) are stained with DAPI. 