Figure 1. S100A8/A9 proteins increase in patients with mild ARDS.

Presence of S100A8/A9 proteins in lung lavage fluid of patients with acute lung injury (ALI) (n = 16) and patients without ALI (n = 62) (A). Representative immunohistochemical stainings of S100A9 (staining in red, background in blue) of human lung tissue obtained from an ICU patient without ALI (B) and with ALI (C). Data are shown as mean ± SEM. *P<0.05.