Figure 3
From: Effect of natural products on the production and activity of Clostridium difficile toxins in vitro
Cell viability determined by neutral red uptake assay. (Culture filtrates and treatments were incubated 2 h prior to being added to the cells); (A) Vero cells; (B) HT-29 cells; Statistical significance: *P < 0.05, **P < 0.01, ***P < 0.001 compared to culture filtrate control.
