| http://www.w3.org/ns/prov#value | - ellulose or their salts; such polysaccharides as hydroxypropyl starch, alginic acid, sodium alginate, and tragacanth gum or their derivatives; and further such derivatives having improved swellability as collagen, gelatine or radiobridged gelatine, chemically modified gelatine (for instance, gelatine denatured by phthalic anhydride or succinic acid) may be mentioned.
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