FIG. 3.
Positive correlation of BPI and IL-8 concentrations in cell-free lung fluid from CF patients. Supernatants of sputum samples from CF patients were collected after treatment with sputolysin and subsequent centrifugation. IL-8 and BPI levels were determined by ELISA. Linear regression shows the positive correlation r2 = 0.6785. The P value was <0.0001.