Figure 2.

Cell viability (a,b) and interleukin 8 (IL-8) concentration (c,d) at 3 h and 24 h measured on GTL-16 and Caco-2 cells treated with different iron formulations. In A and B cell viability, measured by 3-(4,5-Dimethylthiazol-2-yl)-2,5-Diphenyltetrazolium Bromide (MTT) assay, and in C and D IL-8 concentration, measured by ELISA kit, on both cell types were reported. Data are expressed as means ± SD (% vs. control) of four independent experiments for each cell type. FIS = Fisioeme^®. * p < 0.05 vs. control (reported as line); ** p < 0.05 vs. correspondent column at different time; bars p < 0.05 among different treatments at the same time.