| http://www.w3.org/ns/prov#value | - Preferred bulk-forming agents include long chain polymers, for example, polypeptides such as gelatin or hydrolyzed gelatin, cellulose derivatives, alginate derivatives, polyvinylpyrrolidone, polyethylene glycols, polysaccharides, such as dextran, mannitol, sugars and starches and gums, such as acacia, xanthin, tragacanth and guar.
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