Fig. 2. Comparison of Otx1 and Svet1 expression in the cortex at E18.5 (A-C) and P2 (D-F). (A,B,D,E) Dark-field images; (C-F) bright-field images. At E18.5 Otx1 is expressed in the ventricular zone and in the lower part of the cortical plate, as well as in some cells migrating through the intermediate zone (A). Svet1 is expressed in the SVZ, in migrating cells and in cells located outside of Otx1 domain (B). The arrowhead indicates Svet1 expression in the cortical plate. The dashed lines in C denote the boundaries between Svet1 and Otx1 expression in both SVZ/VZ and the cortical plate. On the second postnatal day, Otx1 is expressed in layers V-VI. (D); Svet1 is expressed in superficial layers (E). MZ, marginal zone; other abbreviations as in Fig. 1.