Assertion: intervertebral disc's nucleus pulposus | /r/HasProperty | np]),22-24
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text: way.13, 20, 21 Most research on intervertebral disc degeneration has concentrated on only one aspect of degeneration (in particular the nucleus pulposus [NP]),22-24 while OA is generally regarded as a whole organ disease,25 rather than just degeneration of the AC.