Tracheobronchial cytology utilizing an improved tussilator (cough machine).
D001984:Bronchial Neoplasms; D003371:Cough; D003581:Cytodiagnosis; D006801:Humans; D008175:Lung Neoplasms; D013183:Sputum
BRONCHIAL NEOPLASMS; LUNG NEOPLASMS; SPUTUM