Figure 6.

Representative antioxidant activity of the phenolic compound-modified particles in (a–g) L-929 and (h–n) LN-229 cells. The cells were incubated with (c, j) γ-Fe₂O₃, (d, k) γ-Fe₂O₃@Hep, (e, l) γ-Fe₂O₃@Hep-CS-G, (f, m) γ-Fe₂O₃@Hep-CS-H, and (g, n) γ-Fe₂O₃@Hep-CS-P particles for 3 h, followed by 30 min incubation with 2 mM H₂O₂ (b–g, i–n) prior to analysis using flow cytometry. (a, h) Only cells without and (b, i) with H₂O₂ treatment.