title: Ultrastructrual studies of cerebral aneurysms and angiomas gained operatively.
mesh_terms: D001488:Basilar Artery / Q000648:ultrastructure; D001932:Brain Neoplasms / Q000648:ultrastructure*; D002343:Carotid Artery, Internal / Q000648:ultrastructure; D002536:Cerebral Arteries / Q000648:ultrastructure; D002941:Circle of Willis / Q000648:ultrastructure; D006391:Hemangioma / Q000648:ultrastructure*; D006801:Humans; D002532:Intracranial Aneurysm / Q000473:pathology*; D008854:Microscopy, Electron; D009880:Ophthalmic Artery / Q000648:ultrastructure