Tubular structures in arachnoid cells.
D001099:Arachnoid / Q000473:pathology*; D001932:Brain Neoplasms / Q000473:pathology*; D003593:Cytoplasm; D004721:Endoplasmic Reticulum; D005910:Glioma / Q000473:pathology*; D006056:Golgi Apparatus; D006801:Humans; D066298:In Vitro Techniques; D008854:Microscopy, Electron; D008928:Mitochondria; D013346:Subarachnoid Space