| http://www.w3.org/ns/prov#value | - A subject-matter of the present invention is therefore a device which can be implanted in the body, or endoprosthesis, and in particular a stent, covered with a polymer capable of encapsulating biologically active substances with an anionic or cationic nature and of releasing them locally, which can be used in the treatment of various conditions and in particular of endoprosthetic thrombosis and o
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