| http://www.w3.org/ns/prov#value | - Microprotrusions according to the invention can be of any design sufficient to abrade the desired or target tissue, but preferably have at least one scraping edge and can be formed by various methods recognized by those skilled in the art. [0012] The platen may also contain a second main surface, an attachment surface, that is suitable for attaching the platen to a base or other surface, for examp
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