[Ultrastructure observations of osteosarcoma].
D000328:Adult; D001859:Bone Neoplasms / Q000648:ultrastructure*; D005260:Female; D006801:Humans; D008297:Male; D008637:Mesenchymoma / Q000648:ultrastructure; D008854:Microscopy, Electron; D012516:Osteosarcoma / Q000648:ultrastructure*