| http://www.w3.org/ns/prov#value | - The matrix materials include, but are not limited to, glass and other silicon oxides, polystyrene, polypropylene, polyethylene, polyvinylidene fluoride, polyurethane, polyalginate, polysulphone, polyvinyl alcohol, acrylonitrile polymers, polyacrylamide, polycarbonate, polypentent, nylon, amyloses, gelatin, collagen, natural and modified polysaccharides, including dextrans and celluloses (e.g. nitr
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