title: Comparisons of [14C]urea and [3H]mannitol as lung vascular permeability indicators in awake sheep: evidence against red cell urea trapping.
mesh_terms: D000818:Animals; D002196:Capillaries / Q000502:physiology; D002199:Capillary Permeability; D004912:Erythrocytes / Q000378:metabolism; D005260:Female; D008168:Lung / Q000098:blood supply / Q000502:physiology*; D008353:Mannitol; D011865:Radioisotope Dilution Technique / Q000379:methods*; D012756:Sheep; D012890:Sleep; D014508:Urea
chemical_list: D008353:Mannitol; D014508:Urea