title: Clearance of particles from the human tracheobronchial tree.
mesh_terms: D001980:Bronchi / Q000502:physiology*; D002923:Cilia / Q000502:physiology*; D003371:Cough; D006801:Humans; D008173:Lung Diseases, Obstructive / Q000503:physiopathology; D009093:Mucus / Q000502:physiology*; D012119:Respiration; D012890:Sleep / Q000502:physiology; D014132:Trachea / Q000502:physiology*