Fig. 3. Broadening of the cortico-striatal boundary in ngn2^lacZ/ngn2^lacZ mice. Cortico-striatal boundary markers as indicated in the panel were detected in sections of telencephali at E16 (A-D) or E14 (E-H) in wild-type (A,C,E,G) and ngn2 homozygous mutant littermates (B,D,F,H). (A-F) Immunostainings for radial glia fibers. Note that the width of the radial glial fascicle (indicated by carets) in A-F and the territory of SFRP2 expression (indicated by arrows) (G,H) are enlarged in the absence of Ngn2. The yellow arrows in E and F indicate the cortico-striatal sulcus.

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