Figure 3.

Location of the FMNPs on HEK293 cell: (a) the microscopy image of FMNPs presenting red fluorescence inside of the HEK293 cells; (b) the microscopy image of HEK293 cells nuclear counterstaining with Hoechst 33258; (c) image of combining the blue nuclear and red FMNPs; (d) the microscopy image of HEK293 cells' Prussian blue staining; and (e) TEM image of microstructure of HEK293 cell treated with 50 μg/ml FMNPs for 24 h.

Ruan et al. Nanoscale Research Letters 2011 6:299   doi:10.1186/1556-276X-6-299
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