http://www.w3.org/ns/prov#value | - For example, in one embodiment, the naturally occurring polymeric materials can include proteins such as collagen, fibrin, tropoelastin, elastin, cross-linked tropoelastin and extracellular matrix component, or other biologic agents or mixtures thereof In this embodiment of the invention, the naturally-occurring material can be made by genetic engineering techniques from exogenous genes carried by
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