Fig. 3.

Localization of CAR-positive cells in the rhombencephalon of embryos on E13.5. Color codes are the same as those in Fig. 1. Boxed areas in b, part of the rhombencephalon (RE) of the rat embryo (boxed in a), are further enlarged (c–c''; ependymal zone/ventricular zone, d–d''; mantle zone/intermediate zone, e–e''; marginal zone). Arrowheads, open arrowheads, and arrows indicate the polarized localization of CAR; apical, basolateral, and round localization, respectively. VC; ventricular cavity. Scale bars 500 μm (a), or 50 μm (b–e'').