title: Electron-microscopic studies of the case of chordoma.
mesh_terms: D001859:Bone Neoplasms / Q000648:ultrastructure*; D002081:Buttocks; D002817:Chordoma / Q000648:ultrastructure*; D005260:Female; D006801:Humans; D008854:Microscopy, Electron; D008875:Middle Aged; D012447:Sacrum / Q000648:ultrastructure*; D012983:Soft Tissue Neoplasms / Q000556:secondary / Q000648:ultrastructure*