Prussian blue staining results of cancer cells internalizing magnetic nanoparticles (MNP) in a time dependent manner.

<p>Control corresponds to the cells (HepG2, SKHep-1, HeLa) that were not treated with MNPs and maintained for 24 h in parallel to the treated groups. Insets: the enlarged images of cells. Blue: MNPs; Red: nucleus. The scale bar in each image represents 40 µm.