Figure 2From: Trypsinization-dependent cell labeling with fluorescent nanoparticlesFluorescence 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.Back to article page