title: Reacting ultrastructure of the human oligodendrocyte (a study of cerebral cortex distant to brain tumours).
abstract: Electron microscopical examination of adjacent human cerebral cortex from patients with brain tumour revealed the following morphological distinctive features of the oligodendrocyte: the presence of a diffuse electron dense material, large quantities of free ribosomes or ribosomal rosettes, eccentric nucleus with irregular clumps of chromatin, swollen perinuclear cisterna, extensive cytoplasmic microtubules, well-developed Golgi apparatus opposite the eccentric nuclei, dilated endoplasmic reticulum and mitochondria. The majority of oligodendrocytes contain large indefinable heterogeneous electron-dense structures within their perikaryon or processes. Oligodendrocytes with similar inclusion bodies are seen in the vicinity of capillaries. For these reasons a possible phagocytic activity of the human oligodendrocyte seems likely.
mesh_terms: D001254:Astrocytoma / Q000648:ultrastructure; D001932:Brain Neoplasms / Q000648:ultrastructure*; D002540:Cerebral Cortex / Q000648:ultrastructure*; D005910:Glioma / Q000648:ultrastructure; D006801:Humans; D002479:Inclusion Bodies / Q000648:ultrastructure; D009457:Neuroglia / Q000648:ultrastructure*; D009474:Neurons / Q000648:ultrastructure; D009836:Oligodendroglia / Q000648:ultrastructure*