| http://www.w3.org/ns/prov#value | - intestinal drug delivery systemUS584932727 Sep 199615 Dec 1998Advanced Polymer Systems, Inc.Delivery of drugs to the lower gastrointestinal tractUS586355424 Jul 199726 Jan 1999Danbiosyst Uk LimitedAdministering to a mucosal membrane of vertebrate bioadhesive microspheres formed of material selected from proteins, polysaccharides, hyauronic acid esters, synthetic polymers including drugs and absorp
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