title: [Gated study of ventilation with 81mKr gas--distribution of air and He + O2 mixed gas].
mesh_terms: D000328:Adult; D000388:Air; D001249:Asthma / Q000175:diagnosis; D005540:Forced Expiratory Flow Rates / Q000379:methods*; D006371:Helium; D006801:Humans; D007726:Krypton; D008297:Male; D008449:Maximal Expiratory Flow-Volume Curves / Q000379:methods*; D010100:Oxygen; D011868:Radioisotopes
chemical_list: D011868:Radioisotopes; D006371:Helium; D007726:Krypton; D010100:Oxygen