Fig. 5.

Wasf3^−/− mice form disorganized ciliary membrane layers rather than outer segments. Electron micrographs of photoreceptor outer segments from WT mice or ciliary membrane layers from Wasf3^−/− mice at indicated ages. Retinal sections were contrasted with tannic acid/uranyl acetate to discern disc membranes exposed to the extracellular space (darkly stained membranes) from those enclosed within the cell (lightly stained membranes). (Scale bars, 1 µm.)