The activation of canonical Wnt signaling (represented by GFP) during cornea development. Immunofluorescent staining for GFP (green) and keratin 8 (red) in E14.5 (A-B), E16.5 (C-D), P0 (E-F), P3 (G-H), P13 (I-J) and adult (K-L) mouse cornea. Panels A, C, E, G, I and K are GFP only, panel B, D, F, H, J and L are merged images. Blue-DNA; Green-GFP Red-keratin 8; ce-cornea epithelium; cd-corneal endothelium; onc-ocular neural crest; s-stroma, e-lens epithelium, r-retina, scale bar = 35µm. *Images were taken using the tiling feature (three 3X3 matrix) of the Zeiss 780 confocal microscope. Individual images were taken and then stitched together, which results in a subtle inconsistency near the edges of two adjacent images.