title: Ultrastructural aspects of medulloblastoma.
mesh_terms: D001932:Brain Neoplasms / Q000648:ultrastructure*; D002648:Child; D003388:Cranial Fossa, Posterior; D005260:Female; D006801:Humans; D008527:Medulloblastoma / Q000648:ultrastructure*; D008854:Microscopy, Electron