Figure 3From: Neutrophil elastase reduces secretion of secretory leukoproteinase inhibitor (SLPI) by lung epithelial cells: role of charge of the proteinase-inhibitor complexRelationship between NE and SLPI decrease in the supernatant of A549 cells. The total NE-induced decrease in SLPI concentration, calculated from the experiment shown in Figure 2, was plotted against the concentration of NE used and a linear relationship found (Pearson correlation coefficient 0.846, p < 0.001).Back to article page