IFNG and Sepsis: In peripheral whole blood collected from the same cohort of patients who underwent T-cell proliferation and cytokine analysis, there were fewer cells producing IFN-γ at post-sepsis day 4 ± 1 (Figures 5A, B) than in patients that entered CCI at days 14-21 as compared to patients that rapidly recovered (p=0.03) (Figure 5A).