Fig. 14. Electron micrograph of the inner wall of Schlemm's canal in a cynomolgus monkey after anterior chamber perfusion with cationized ferritin (black) (21,000×). (From Epstein DL, Rohen JW: Morphology of the trabecular meshwork and inner-wall endothelium after cationized ferritin perfusion in the monkey eye. Invest Ophthalmol Vis Sci 32:160, 1991, with permission.)