Topographical expression map of the medial ganglionic eminence. (A-C) Representative pictures of the area chosen for laser microdissection (wild type shown: (A) precut; (B) postcut; (C) magnification of insert in (B). LGE, lateral ganglionic eminence; MGE, medial ganglionic eminence. Scale bars represent 200 μm. (D) Topographical expression map of different genes within the MGE (wild type shown; expression level given in reads per million).