title: Clearance from the respiratory tract.
abstract: Alterations in the clearance of insoluble particles have been shown to provide a sensitive indicator of response due to exposure to various inhaled materials. This paper reviews clearance mechanisms, the significance of clearance changes, and the methodology used to assess them.
mesh_terms: D000336:Aerosols; D000818:Animals; D002923:Cilia / Q000378:metabolism; D005243:Feces / Q000032:analysis; D006801:Humans; D007700:Kinetics; D008168:Lung / Q000378:metabolism; D008264:Macrophages / Q000378:metabolism; D009092:Mucous Membrane / Q000378:metabolism; D012143:Respiratory Physiological Phenomena; D012137:Respiratory System / Q000378:metabolism*; D012140:Respiratory Tract Diseases / Q000378:metabolism
chemical_list: D000336:Aerosols