we emphasize the importance of the inflammatory involvement of the alveolar wall in the pathogenia of diffuse alveolar damage ( dad ) and the aggravation of pulmonary lesions by capillary structure alteration , direct lesion of alveolar epithelium , presence of macrophages , and liberation of certain intracellular enzymes .
C0225695
alveolar wall
C0225694
alveolar epithelium