title: Letter: Hairy Cells.
mesh_terms: D001402:B-Lymphocytes / Q000473:pathology; D003584:Cytological Techniques; D006801:Humans; D007945:Leukemia, Lymphoid / Q000097:blood*; D008206:Lymphatic Diseases / Q000473:pathology*; D008214:Lymphocytes / Q000473:pathology*; D008855:Microscopy, Electron, Scanning