Expression patterns of PCNA (A, B), CycD1 (C, D), Pax6 (E, F), and Tuj1 (G, H) proteins in Chx10orJ/orJ (A, C, E, G) and Chx10orJ/orJ, Vsx1τlacz/τlacz (B, D, F, H) eyes. All panels with an * show the images in the boxes from each corresponding panel. These image were rotated such that the apical surface of the retina is pointed down. Scale bars: 100 μm.