Figure 4: Ultrastructural analysis of the WT and EYS^−/− zebrafish photoreceptors at 3 mpf.

The morphological and disk-stacking of OS is normal between the WT and EYS^−/− zebrafish (A,B). The number of photoreceptors in EYS^−/− zebrafish is less than WT zebrafish (C,D). Scale bars: 1 μm in (A,B); 5 μm in (C,D).