Nanosized As2O3/Fe2O3 complexes combined with magnetic fluid hyperthermia selectively target liver cancer cells

Figure 5 Results of MTT assay of SMMC-7721 cells treated with Fe₂O₃ and As₂O₃/Fe₂O₃ combined with MFH. 1: Negative control; 2: Positive control; 3: MFH alone; 4: Fe₂O₃ (5 g/L); 5: As₂O₃/Fe₂O₃ (5 g/L); 6: As₂O₃ (5 &mgr;mol/L); 7: Fe₂O₃ (5 g/L) combined with MFH; 8: As₂O₃/Fe₂O₃ (5 g/L) combined with MFH. (^bP < 0.01 vs negative group).