Respiratory function in the aged.
D000367:Age Factors; D000368:Aged; D004058:Diffusion; D006801:Humans; D008168:Lung / Q000502:physiology*; D008170:Lung Compliance; D010100:Oxygen / Q000097:blood; D010809:Physical Fitness; D011650:Pulmonary Alveoli / Q000502:physiology; D011652:Pulmonary Circulation; D012119:Respiration; D012129:Respiratory Function Tests; D014692:Ventilation-Perfusion Ratio
D010100:Oxygen