title: Pulmonary host defense mechanisms.
mesh_terms: D001424:Bacterial Infections / Q000276:immunology / Q000503:physiopathology; D003371:Cough / Q000503:physiopathology; D006801:Humans; D007111:Immunity, Cellular; D008168:Lung / Q000276:immunology / Q000502:physiology*; D008171:Lung Diseases / Q000378:metabolism / Q000503:physiopathology; D008264:Macrophages / Q000276:immunology; D009092:Mucous Membrane / Q000502:physiology; D009504:Neutrophils / Q000378:metabolism; D010100:Oxygen / Q000378:metabolism; D010587:Phagocytosis; D011650:Pulmonary Alveoli / Q000276:immunology; D012143:Respiratory Physiological Phenomena; D012137:Respiratory System / Q000276:immunology; D012212:Rheology; D012912:Sneezing
chemical_list: D010100:Oxygen