title: Respiratory therapy effect on the yield of pulmonary macrophages.
mesh_terms: D001993:Bronchodilator Agents / Q000008:administration & dosage; D002452:Cell Count; D003581:Cytodiagnosis / Q000379:methods; D004322:Drainage; D006801:Humans; D008175:Lung Neoplasms / Q000628:therapy*; D008264:Macrophages / Q000032:analysis*; D013183:Sputum / Q000166:cytology*
chemical_list: D001993:Bronchodilator Agents