Effects of CF on cancer and normal human cells. (A) Cells were cultured in the presence or absence of CF at the 1:200 dilution for 24 and 48 hours. Cell viability was measured using the XTT assay and expressed as% of inhibition of proliferation versus non treated cells (CNTRL). Data are expressed as mean ± SD of at least three independent experiments. * p < 0.05 vs CNTRL. (B) HFF, Met5A, HCT-116 and MSTO cells were treated with CF (5 μl/ml, corresponding to a 1:200 dilution) or not (CNTRL) for 24 and 48 hours, the graphs represent the vital cells number measured by manual count. Data are expressed as mean ± SD of at least three independent experiments.