Figure 2: Lung SCGB3A2 protein levels. Western blot analyses were performed on lung homogenates prepared from (a) 7 d, (b) 14 d, and (c) 28 d animals exposed to room air or 85% O2 as indicated. All days were normalized to d14 room air. Data (mean ± SEM, –6) were analyzed by Student’s test or Mann-Whitney U test. (* versus same day room air).