charide core and ionically interacting skin, polysaccharide-degrading enzymeUS4942129 *Jul 12, 1988Jul 17, 1990Queen's University At KingstonCore of living tissue such as hybridoma or insect cells, a double polymer membranes to make a microcapsuleUS5015584 *Feb 9, 1988May 14, 1991Board Of Regents, The University Of Texas SystemCulture of skin cells, attaching cells to a collagen coated surgical dr