Research Article

Synthesis, Characterization, and Evaluation of Disulfide-Containing Polyethylenimine Derivative Functionalized Magnetic Carbon Nanotubes as an Efficient Gene Vector

Figure 10

Confocal images of COS-7 cells after incubation with CNTs/Fe3O4-SSPEI/DNA complexes without an external magnetic field (a) and with an external magnetic field (b). The weight ratio of CNTs/Fe3O4-SSPEI/DNA is 8.
(a)
(b)