Metabolic Heterogeneity of Keratan Sulfate in Bovine Cornea and its Role in the Maintenance of Corneal Collagen Structure

On sequential extraction of bovine corneas with 0.155 M NaCl and 1 M CaCl2 two macromolecular fractions were obtained in a ratio of 0.7–1.5, both containing glycosa-minoglycans and a hexosamine containing non-glycosaminoglycan subfraction.