Expression of the transgene in the developing retina.

<p>X-gal staining in sectioned eyes from transgenic mice at different postnatal days (P1–P30). Pigmented epithelium (pe), neuroblastic layer (nbl), putative ganglion cell layer (p-gcl), inner nuclear layer (inl). Arrowheads in H depict X-gal staining in the inl at P20. Scale bar A–C 200 µm, D–I 50 µm.