Fenestrae in golgi and endoplasmic reticulum cisternae of human brain tumours.
Fenestrae were found in freeze-fractured cisternae of the Golgi apparatus and endoplasmic reticulum of glioblastoma, oligodendroglioma, ependymoma, medulloblastoma, medulloepithelioma, meningioma, cerebellar sarcoma, hemangioblastoma, and chromophobe adenoma. They were about 200--400 A in diameter and often diffusely distributed or concentrated in groups in Golgi cisternae, while they were around 300--600 A in size and scattered in distribution in cisternae of endoplasmic reticulum. They appeared as conical protrusions or circular broken-off necks of face A and as circular holes on face B in tangential fractures, and as several constrictions of cisternae in cross fractures.
D000238:Adenoma, Chromophobe / Q000473:pathology; D001932:Brain Neoplasms / Q000473:pathology*; D002528:Cerebellar Neoplasms / Q000473:pathology; D003584:Cytological Techniques; D004721:Endoplasmic Reticulum / Q000648:ultrastructure*; D004806:Ependymoma / Q000473:pathology; D005615:Freezing; D005909:Glioblastoma / Q000473:pathology; D006056:Golgi Apparatus / Q000648:ultrastructure*; D006394:Hemangiosarcoma / Q000473:pathology; D006801:Humans; D008527:Medulloblastoma / Q000473:pathology; D008579:Meningioma / Q000473:pathology; D018241:Neuroectodermal Tumors, Primitive, Peripheral / Q000473:pathology; D009837:Oligodendroglioma / Q000473:pathology; D012509:Sarcoma / Q000473:pathology