Quantification of markers that represent the different populations that compose the ventricular-like zone (VZ), sub-ventricular zone (SVZ) and the cortical plate (CP), as depicted in Appendix Figure S2B-C. NeuN marks mature neurons, TBR2 marks intermediate progenitors (IPs) and SOX2 the ventricular radial glia (vRGs). The boxplot represents the 1st and 3rd quartile, with its whiskers showing the minimum and maximum points and a central band representing the median. Statistical significance was determined using one-way ANOVA with Tukey's multiple comparisons test (WT: n=8 from 3 batches, KO: n=8 from 3 batches, W-AAV n=4 from 1 batch). 