Box plots (min to max) showing IL-6 (left) and IL-8 (right) concentrations in cell culture supernatants of A549 (A), 16HBE14o- (B), hAECN (C) and hAECB (D) cells exposed for 24 h (16HBE14o-, hAECN and hAECB) or 48 h (A549) to single and combinational mixtures of DON, NIV and FX. Bar colors indicate the concentrations at which mycotoxins were used: white, light grey and dark grey for concentrations affecting the viability of 10%, 30% and 50% of cells, respectively. Data are from three independent experiments performed in triplicate. * Indicates statistically significant differences (p < 0.05) in cytokine levels between cells exposed and not exposed to mycotoxins.