Bronchoalveolar lavage (BAL) and serum measurements stratified for the aquaporin-5 (AQP5) –1364A/C promoter genotypes and 30-day survival. Each first column indicates acute respiratory distress syndrome (ARDS) nonsurvivors, and each second column indicates ARDS survivors. The ARDS nonsurvivors showed a higher total protein concentration (A ), albumin concentration (B ), lactate dehydrogenase (LDH) activity (C ), and leukocyte concentration (D ).