part of adult brain glial cell perineurial glial sheath CNS perineurial glial cell adult perineurial glial cell adult brain surface glial cell adult brain perineurial glial cell 2011-04-27T11:05:54Z fly_anatomy.ontology The perineurial glial cells develop post-embryonically, in a non-GCM manner, and are thus likely to function only in the blood-brain-barrier of the adult (Edwards and Meinertzhagen, 2010). Small, oblong-shaped glial cell that is part of the (outer) perineurial sheath layer on the surface of the adult brain. It is located on top of the basal glial cell layer that is composed of the subperineurial glial cells. VFB:FBbt_00100506 adult brain PNG FBbt:00100506