| http://www.w3.org/ns/prov#value | - Drug delivery may depend upon the presence of moisture to permit release of the drug, as in time-release capsules made of gelatin or other water soluble materials, including ???XGel??? materials, which are gels and films made from polyvinylalcohol or a cellulose derivative that can replace gelatin capsules used for medication, as described more fully in Materials World, June 2001, pp. 10-12.
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