a group of ten elderly subjects who were apparently normal from the cardiac and pulmonary points of view , were selected on criteria of history , clinical findings , radiological and e.c.g . findings , with a view to a study of respiratory function based on two aspects : alveolar exchanges were assessed by measurement of the ductance of carbon monoxide and the elastic properties of the lung together with bronchial permeability .
C0035203
respiratory function
C0024109
lung