[Electron microscopic observation of malignant fibrous histiocytoma--a report of 3 cases].
D000368:Aged; D005260:Female; D018219:Histiocytoma, Benign Fibrous / Q000209:etiology / Q000648:ultrastructure*; D006801:Humans; D008297:Male; D008854:Microscopy, Electron; D008875:Middle Aged