title: Indirect determination of gas absorption from the middle ear.
mesh_terms: D000042:Absorption; D000328:Adult; D004432:Ear, Middle / Q000378:metabolism*; D005064:Eustachian Tube / Q000378:metabolism; D006801:Humans; D008875:Middle Aged; D009584:Nitrogen / Q000378:metabolism*; D010100:Oxygen / Q000378:metabolism*; D011312:Pressure; D013997:Time Factors; D014432:Tympanic Membrane / Q000378:metabolism
chemical_list: D009584:Nitrogen; D010100:Oxygen