Fig. 10. Electron micrographs of the elastic-like fibers of the human trabecular meshwork. A. After incubation with chondroitinase, the banded material in the sheath of the elastic-like fibers is clearly visible. Asterisk indicates sheath material with regular banding (periodicity of 45 nm); arrowheads show long-spacing fibers with a periodicity of 120 nm; arrows denote fine fibrils of the long-spacing material. B. Elastic-like fibers after treatment with pancreatic elastase. Only a small portion of the central core has been dissolved (arrows).