Figure 4: Examination of cell biocompatibility of the Glu-Fe3O4 MNPs. Cell viability test obtained by incubating Glu-Fe3O4 MNPs at different concentrations with (A) T47D cells (~ 8000 cells, 0.1 mL) and (B) Hs578T cells (~ 4000 cells, 0.1 mL).