title: [Characteristics of pulmonary ventilation and gas exchange in middle and old age].
mesh_terms: D000328:Adult; D000368:Aged; D000375:Aging; D001980:Bronchi / Q000502:physiology; D006801:Humans; D008875:Middle Aged; D011659:Pulmonary Gas Exchange; D012129:Respiratory Function Tests; D014692:Ventilation-Perfusion Ratio
vernacular_title: Osobennosti legochnoĭ ventiliatsii i gazoobmena v pozhilom i starcheskom vozraste.