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Lung edema formation. (a) Total lung edema expressed as wet‐dry (W/D) lung weight ratio, (b) W/D of apical, medial, and caudal regions of lungs of untreated control group, and groups treated with poractant alfa or CHF5633 surfactant. Data are presented as individual values with mean ±SD. Statistical comparisons: for poractant alfa and CHF5633 vs. control *p < 0.05, **p < 0.01, ***p < 0.001
