#leptomeninges__leptomeninge  the two innermost layers of the meninges; cerebrospinal fluid circulates between these innermost layers
  supertype:  #meninx__meninges  a membrane (one of 3) that envelops the brain and spinal cord
  part:  #arachnoid_membrane__arachnoidmembrane__arachnoid  the middle of the 3 meninges
  part:  #pia_mater__piamater  the highly vascular innermost of the 3 meninges

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