Figure 5

Figure 5

Concentration-Response Curves for Cell Viability in NHBE. Curves are in order from high to low potency based on predicted EC₅₀ values. (A) Toxicity Mix was the most potent mixture with an EC₅₀ of 31.9 µM. (B) Weighted-Toxicity Mix was the second most potent mixture with an EC₅₀ of 753 µM. (C) Abundance Mix was the least potent mixture with EC₅₀ of 1920 µM. (D) Creosote-Fire Mix had significant bioactivity for two highest doses, however, no EC₅₀ was calculated. Concentrations significantly different from control are denoted with an asterisk (*). p < 0.05 *; p < 0.01 **; p < 0.001 ***.