Peptidase activity of neutrophil serine proteases from the BAL fluid of pigs infected with P. aeruginosa.
A. Peptidase activities of NE, Pr3 and cat G (means ± SEM; n = 6). Increased protease activity were analysed using the non-parametric Mann-Whitney U test. *** indicates a significant increase in enzyme activity (p<0.001). B. Western blotting of neutrophil elastase showing free protease (25 kDa) and an irreversible complex with serpins (63 kDa).