Notes: All results are the means of three sets of experiments; error bars represent the standard error of the mean (two-way analysis of variance (ANOVA) followed by the Bonferroni’s post hoc test). *P<0.05; **P<0.01; P<0.001. Figure 3: Viability of MCF-7 and MCF10-A cells : Cell viability in human MCF-10A mammary epithelial cells and MCF-7 breast cancer after 24 hours’ treatment with: free Rhodium (II) citrate (Rh2(H2cit4) ); Rh2(H2cit4) associated with maghemite nanoparticles (Magh-Rh2(H2cit4) , (containing 0.153 mol/L iron) at the concentrations of 50 μM, 200 μM and 300 μM; or citrate-loaded maghemite (Magh-cit) nanoparticles at the concentrations of 3 mM, 12 mM and 19 mM (iron).