SMOX and acute respiratory distress syndrome: The lung injury of mice were assayed 24 h post injection with PAO1, protein and white cell counts in bronchoalveolar lavage fluid (Fig. 5b-c) increased in ARDS mice injected with Phenylalanine compared to those treated with PBS, indicating that Phenylalanine increased the recruitment of inflammatory cells and impairment of alveolar epithelial cells.