| http://www.w3.org/ns/prov#value | - For purposes of this invention, it is preferred that an undulated surface includes undulations that do not form a regular pattern.Undulations"orundulateddoes not include structures such as reservoirs or microwells that are created by methods such as for example printing, embossing, casting, molding, laserscribing, photolithography, etching, mechanical scratching, or scoring.
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