| http://www.w3.org/ns/prov#value | - In addition, the upper surface 885, the lower surface 886, or both may comprise features such as grooves, pits, or projections which help retain the implant between vertebrae when inserted into an intervertebral space. [0043] Further applications to which the instant invention may be applied include production of a segmentally demineralized anterior longitudinal ligament (ALL) for stabilization of
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