title: Ultrastructural studies on osteoclastoma.
mesh_terms: D001859:Bone Neoplasms / Q000648:ultrastructure*; D003593:Cytoplasm / Q000648:ultrastructure; D004721:Endoplasmic Reticulum / Q000648:ultrastructure; D005347:Fibroblasts / Q000648:ultrastructure; D005870:Giant Cell Tumors / Q000648:ultrastructure*; D006801:Humans