much of the proteolytic activity of the bal fluid from ards patients was identified as neutrophil elastase : the fluids cleaved elastin and synthetic peptide substrate of neutrophil elastase , neutrophil elastase antigen was present in the bal fluids as determined immunologically using antineutrophil elastase , alpha1-pi was the major inhibitor in plasma , and the enzyme was inhibited by diisopropylphosphofluoridate but not chelation .
C0064833
neutrophil elastase
C0030306
elastase