title: A technical aid in the cytologic diagnosis of exfoliative cells in pulmonary pathology.
mesh_terms: D001202:Ascitic Fluid / Q000166:cytology; D003581:Cytodiagnosis; D003584:Cytological Techniques; D006801:Humans; D008175:Lung Neoplasms / Q000175:diagnosis*; D010996:Pleural Effusion / Q000166:cytology; D013183:Sputum / Q000166:cytology; D013194:Staining and Labeling