| http://www.w3.org/ns/prov#value | - This layer may be made of a material such as for example polvinyl acetate (PVAc) or ethyl cellulose, or such, for example, one of the Eudragit family of polymethacrylic copolymers commercially available from Rohm (e.g., Eudragit S100, L100, E100, L100-55).
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