title: Reduction in clearance of secretions from the human lung during sleep [proceedings].
mesh_terms: D000328:Adult; D000336:Aerosols; D006801:Humans; D008168:Lung / Q000378:metabolism*; D008875:Middle Aged; D009092:Mucous Membrane / Q000378:metabolism; D012890:Sleep / Q000502:physiology*
chemical_list: D000336:Aerosols