Expiratory gas concentration curves for examination of uneven distribution of ventilation and perfusion in the lung. Second communication: experiments.
D002000:Bronchospirometry; D002245:Carbon Dioxide / Q000032:analysis*; D006371:Helium / Q000032:analysis*; D006801:Humans; D011656:Pulmonary Emphysema / Q000503:physiopathology*; D012119:Respiration; D013997:Time Factors; D014692:Ventilation-Perfusion Ratio
D002245:Carbon Dioxide; D006371:Helium