Fig 2. Plasma kallistatin levels on days 1, 3 and 5 of ICU admission in severe sepsis versus septic shock, positive blood culture versus negative blood culture, and ARDS versus non-ARDS.

Plasma kallistatin levels on days 1, 3 and 5 were compared between patients with severe sepsis and septic shock (A), patients who were blood culture positive and blood culture negative (B), and ARDS and non-ARDS patients (C). The Mann-Whitney nonparametric U-test was used for comparisons between the groups. BC, blood culture.