vasular artificial organUS4923645 *16 Nov 19878 May 1990Damon Biotech, Inc.Sustained release of encapsulated moleculesUS4933185 *11 Jul 198812 Jun 1990Massachusetts Institute Of TechnologyMicrocapsules of polysaccharide core and ionically interacting skin, polysaccharide-degrading enzymeUS4942129 *12 Jul 198817 Jul 1990Queen's University At KingstonCore of living tissue such as hybridoma or insect