title: Ultrastructural observations of bone marrow cells in preleukemic patients.
mesh_terms: D000368:Aged; D001854:Bone Marrow Cells; D005260:Female; D006801:Humans; D008214:Lymphocytes / Q000648:ultrastructure; D008297:Male; D008854:Microscopy, Electron; D008875:Middle Aged; D009504:Neutrophils / Q000648:ultrastructure; D011289:Preleukemia / Q000648:ultrastructure*