Fig. 1. Cell marker expression in embryonic GE and OB. E12.5 and 13.5 mouse coronal or sagittal sections containing the GE or the OB were immunostained with specific antibodies. Gsh2 and Dlx2 were expressed strongly in the MGE and LGE (A-H), whereas no expression was observed in E13.5 OB (I,J). Most GABA⁺, Th⁺ and Tbr1⁺ cells were located in the MZ (K-N; a high magnification image is shown in N). LV, lateral ventricule; CTEX, cortex; NEZ, neuroepithelial zone; MZ, mantle zone. Similar expression patterns were observed in sections from two to five different mice. Scale bars: in N, 70 µm for A,C,G,I,J; 40 µm for B,D,E,F,H,N; 150 µm for K; 65 µm for L,M.