#neurolemma__neurilemma  thin membranous sheath around a nerve fiber
  supertype:  sheath.natural_covering__case  an enveloping structure or covering enclosing an animal or plant organ or part
  part of:  nerve_fiber__nervefiber__nerve_fibre__nervefibre  a threadlike extension of a nerve cell
     part of:  nervus__nerve  any bundle of nerve fibers running to various organs and tissues of the body

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