Fig. 5. Myeloperoxidase (MPO) activity in lung homogenates (mean ± SEM; n = 10 in each group): Lipopolysaccharide (LPS) treatment increased MPO, leukocyte depletion prevented this increase, and NO inhalation partly suppressed it. For abbreviations (LPS, CPA + LPS, LPS + NO), see table 1, and for statistical symbols, see figure 4.