| http://www.w3.org/ns/prov#value | - As the polysaccharides introducing carboxyl groups thereinto artificially, there can also be used those obtained by activating a polysaccharide such as dextran, dextran sulfate, pullulan, Ficoll, starch, dextrin, cellulose, ??-cyclodextrin, ??-cyclodextrin, ??-cyclodextrin, or the like by a method using cyanogen bromide (Nature, vol. 214, page 1302, 1967), epichlorohydrine (Infect.
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