Figure 4. Iron accumulation in control (C1, C2) and MS (P1, P2) fibroblasts. (A) Representative images of Prussian Blue staining. Scale bar = 20 μm. (B) Quantification of iron integrated density. (C) Iron content measured by ICP-MS. Data represent the mean ± SD of three independent experiments. ***p-value < 0.0001 between control and MS cells. aaap-value < 0.0001 between untreated and deferiprone-treated P1 cells. a.u.: arbitrary units.