Cancer of the lung: the cytology of sputum prior to the development of carcinoma.
D003581:Cytodiagnosis; D006801:Humans; D008175:Lung Neoplasms / Q000175:diagnosis*; D008297:Male; D008679:Metaplasia; D008875:Middle Aged; D008906:Mining; D013183:Sputum / Q000166:cytology*; D014481:United States; D014501:Uranium / Q000009:adverse effects*
D014501:Uranium