Figure 7
Intracellular radical measurement after exposure of BEAS-2B cells to TiO 2 -NP (a) and hematite NP (b). Hematite NP induced a delayed effect (significant results after 12 h) compared to TiO2 NP (significant results after 6 h exposure). Desferal treatment (concentration: 100 μM) of particle-exposed cultures induced a significant reduction of radical formation in TiO2 but not in hematite exposed cells.