title: The extracellular space in brain tumours. I. Morphological considerations.
mesh_terms: D001254:Astrocytoma / Q000473:pathology; D001932:Brain Neoplasms / Q000473:pathology*; D005110:Extracellular Space; D005909:Glioblastoma / Q000473:pathology; D006801:Humans; D008579:Meningioma / Q000473:pathology; D008629:Mercury Isotopes; D008854:Microscopy, Electron; D011877:Radionuclide Imaging
chemical_list: D008629:Mercury Isotopes