title: Persistent apex to base gradients of aerosol deposition in rats.
mesh_terms: D000336:Aerosols; D000818:Animals; D006050:Gold Radioisotopes; D008168:Lung / Q000502:physiology*; D011187:Posture; D011865:Radioisotope Dilution Technique; D051381:Rats; D011919:Rats, Inbred Strains / Q000502:physiology; D012119:Respiration
chemical_list: D000336:Aerosols; D006050:Gold Radioisotopes