Fig. 4. Transmission electron micrograph (10,000×) of a basal epithelial cell showing the adhesion complexes (arrowheads) that anchor it in place onto the Bowman's layer and summary inset. B, basal epithelial cell. Bar = 1 μm. (Inset from Albert and Jakobiec: Principles and practice of ophthalmology. Philadelphia, WB Saunders, 2000.)