Effect of gas density on mechanics of breathing.
D000328:Adult; D000388:Air; D001696:Biomechanical Phenomena; D005740:Gases / Q000032:analysis; D006371:Helium; D006801:Humans; D008297:Male; D010100:Oxygen; D012119:Respiration / Q000502:physiology*; D012129:Respiratory Function Tests; D013147:Spirometry
D005740:Gases; D006371:Helium; D010100:Oxygen