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MTT assay regarding cell proliferation and viability of labeled cells in different concentration of iron oxide nanoparticles (90, 180, 260 µg/mL) transfected with 1 and 2 µL/mL of lipofectamine. Data are representative of three independent experiments (p = 0.19, * p = 0.048, ** p = 0.001, *** p = 0.003, respectively), revealing the non-toxic role of nanoparticles when transfected with lipofectamine.
