Figure 4

Flow cytometry analyses of A549 and MCF-7 cells treated with the PEGylated FA-FITC-MNPs. The cultivated cells were treated with the FA-FITC-MNPs for 2 h and then subjected to the flow cytometry analyses. Panels A, B and C show the untreated, the treated and the overlaid images of the A549 cells, respectively. Panels D, E and F represent the untreated, the treated and the overlaid images of the MCF-7 cells, respectively. FA: folic acid. FITC: Fluorescein isothiocyanate. MNPs: magnetic nanoparticles.