143524.fig.002a
(a)
143524.fig.002b
(b)
Figure 2: (a) Microscopic images of GPs containing 20 nm anionic fluorescent carboxylate polystyrene nanoparticles. (b) Fluorescent photomicrographs showing uptake of GP-cPS-NPs by control NIH3T3 fibroblast cells (left) and GP phagocytosing proficient NIH3T3-D1 cells (right).