title: Letter: Hairy cells.
mesh_terms: D003537:Cystadenoma / Q000473:pathology; D005260:Female; D006801:Humans; D007938:Leukemia / Q000473:pathology*; D008206:Lymphatic Diseases / Q000473:pathology*; D010051:Ovarian Neoplasms / Q000473:pathology*; D010996:Pleural Effusion; D009626:Terminology as Topic