Figure 2

Protective effect of B. fragilis against TNF-α-induced impairment of cell activity. (a) Cell survival under individual or combined treatment with 1×108 CFU/ml and 30 ng/ml TNF-α. (b) Lactate dehydrogenase activity in cell culture supernatants. ***p < 0.001, **p < 0.01, *p < 0.05 ns: not significant. All data show mean ± SEM. BF B. fragilis, TNF-α tumor necrosis factor-α.