title: Ultrastructural study of pleural fluid in mesothelioma.
mesh_terms: D003581:Cytodiagnosis; D003937:Diagnosis, Differential; D006801:Humans; D008654:Mesothelioma / Q000175:diagnosis / Q000473:pathology*; D008854:Microscopy, Electron; D010996:Pleural Effusion / Q000166:cytology* / Q000175:diagnosis; D010997:Pleural Neoplasms / Q000175:diagnosis / Q000473:pathology*