BI suppresses NETosis in the airways. A) PicoGreen analyses show that LPS instillation increases cell-free DNA, and BI suppresses such an effect. B, C) Western blot analyses show that BI has a similar effect on CitH3 (B) and MPO levels in the BAL (C); n = 4 for sham, n = 5 for BI, LPS, and BI + LPS. +, mean. *P < 0.05, **P < 0.01, ***P < 0.001.