Zfhx1b prenatal expression has been noted in migrating cortical interneurons and the subpallial telencephalon (Batista-Brito et al., 2008; Seuntjens et al., 2003). We found that Zfhx1b RNA is expressed in E12.5 MGE-derived cells that are tangentially migrating through the LGE and into the cortex by performing fluorescent in situ hybridization (FISH) on a brain in which MGE-derived cells expressed EGFP (expressed due to Nkx2.1-Cre induced recombination of the CAG:CAT-EGFP Cre reporter allele) (Figures S1 A-A”).
