prov:value
| - The polymeric substance may be of varied nature, natural or synthetic, e.g. a water-soluble polymer such as a polyalkylene glycol, in particular a polyethylene glycol, a polyvinyl alcohol, a polyacrylic derivative, a cellulose derivative, in particular, a cellulose ester or ether or a hydroxycellulose, a polysaccharide or a water-soluble polyester, or a water-insoluble polymer, in the form of a la
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