title: Lung defense mechanisms.
mesh_terms: D000397:Air Pollution; D001991:Bronchitis / Q000150:complications; D004781:Environmental Exposure; D006801:Humans; D000860:Hypoxia / Q000503:physiopathology; D007166:Immunosuppressive Agents / Q000009:adverse effects; D007962:Leukocytes / Q000201:enzymology; D008168:Lung / Q000276:immunology*; D008171:Lung Diseases / Q000139:chemically induced / Q000209:etiology* / Q000235:genetics / Q000503:physiopathology; D008661:Metabolism, Inborn Errors / Q000150:complications; D010102:Oxygen Inhalation Therapy / Q000009:adverse effects; D010587:Phagocytosis; D011009:Pneumoconiosis / Q000503:physiopathology; D011650:Pulmonary Alveoli / Q000503:physiopathology; D011656:Pulmonary Emphysema / Q000201:enzymology / Q000235:genetics; D011663:Pulmonary Surfactants; D012119:Respiration; D012907:Smoking / Q000150:complications; D013514:Surgical Procedures, Operative / Q000009:adverse effects; D014361:Trypsin Inhibitors / Q000097:blood; D014777:Virus Diseases / Q000150:complications
chemical_list: D007166:Immunosuppressive Agents; D011663:Pulmonary Surfactants; D014361:Trypsin Inhibitors