| http://www.w3.org/ns/prov#value | - Prior to implantation, the articular cartilage heterograft of the invention may be treated with limited digestion by proteolytic enzymes such as ficin or trypsin to increase tissue flexibility, or with glycosidases to remove surface carbohydrate moieties, or coated with anticalcification agents, antithrombotic coatings, antibiotics, growth factors, or other drugs which may enhance the incorporatio
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