part of part of has part has part immediately deep to immediately superficial to located in located in basement membrane astrocyte end-foot blood brain barrier cerebral cortex pia mater multi cell part structure glial limiting membrane The meshwork of astrocytic foot processes (glial end feet) covered by a basal lamina adjacent to the inner pial surface of the central nervous system. glia limitans Wikipedia:Glia_limitans NIF_Subcellular:nlx_subcell_100209 UBERON:0018687