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. 2014 Oct 13;9(1):568. doi: 10.1186/1556-276X-9-568

Figure 2.

Figure 2

Fluorescence microscope images of 3T3-L1 fibroblast cells labeled by the CFO NPs. Cells were exposed to different concentrations at t1 = t0 + 24 h, where t0 corresponds to the end of trypsin treatment: (a) 0.1 mg/mL of CFO NPs, (b) 0.2 mg/mL, (c) 0.4 mg/mL, and (d) 0.8 mg/mL.