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Protein concentrations (g/dl) in bronchoalveolar lavage fluid (BALF) 2 hours (H2), 4 hours (H4), and 12 hours (H12) after Pseudomonas aeruginosa CHA and CHA-D1 intratracheal instillations. The data are means + SE (indicated by error bars). *, statistically different from the CHA-D1 group (P < 0.05); ○, statistically different from the previous time point with the same strain (CHA) (P < 0.05).
