Mucociliary function as protective mechanism in upper respiratory tract.
D003141:Communicable Diseases / Q000635:transmission*; D018562:Disease Transmission, Infectious; D006801:Humans; D007830:Larynx; D009666:Nose; D012143:Respiratory Physiological Phenomena; D012137:Respiratory System / Q000502:physiology*; D014132:Trachea
COMMUNICABLE DISEASES/transmission; RESPIRATORY SYSTEM/physiology