in this cross-sectional study , we measure several phagocyte derived enzymes , namely plasminogen activator , neutrophil elastase and an ill-defined protease active on the trialanine chromophore substrate succinyl-alanine3-nitroanilide ( slapn ) in bronchoalveolar lavage ( bal ) fluid from 42 patients with pulmonary sarcoidosis and from 43 patients with collagen vascular disease ( cvd ) , 22 without lung disease ( group i ) and 21 associated with parenchymal lung disease ( group ii ) .
C0014442
enzymes
C0030946
protease