| http://www.w3.org/ns/prov#value | - The controlled release formulations and methods of the invention may be used in conjunction with any implantable, insertable or injectable system known in the art, including but not limited to microspheres, microcapsules, gels, pastes, implantable rods, pellets, plates or fibers, and the like (generically referred to as ???substrates???).
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