Supplementary Figure 1: PV⁺ and SST⁺ interneurons in Dlx1/2^CreER and Nkx2-1^CreER mouse lines.

(a,c) Coronal sections through the somatosensory cortex of P30 Dlx1/2^CreER;Ai9 (a) and Nkx2-1^CreER;Ai9 (c) showing the distribution of TdTomato cells that also express PV or SST. Open arrowheads point to TdTomato-expressing cells that do not express PV (a’,a”) or SST (c’,c”), whereas arrowheads indicate TdTomato/PV (a’,a”) and TdTomato/SST (c’,c”) double-labeled cells, repeated with similar results over 3 animals. (b,d) Boxplots represent median, 1^st and 3^rd quartile, and 1.5 IQR for fraction of TdTomato/PV and TdTomato/SST double-labeled cells in Dlx1/2^CreER;Ai9 (b) and Nkx2-1^CreER;Ai9 (d) mice. n = 3 mice per genotype. Scale bar equals 100 µm.