Previous studies have demonstrated that decreasedneutrophil and MPO levels in the BALF are associated with improvedoutcomes in influenza-induced acute respiratory distress syndromeand cystic fibrosis.56,57 Consequently, the beneficialeffects of anti-O2afg antibodies on lung and BALF parameters suggesttheir potential to enhance the survival rates in CR-Kp-infected mice.58−63. The gene discussed is MPO; the disease is influenza.