| http://www.w3.org/ns/prov#value | - The envelope 20 with the spacer 100 may further include one or more drugs and/or one or more coatings as described above (see FIGS. 1A, 1B, 2A, 2B, 3A, and 3B and corresponding text). [0178] In another aspect, the invention is a system for delivering an implant enclosed in an envelope.
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