Skip to main content
. Author manuscript; available in PMC: 2021 May 10.
Published in final edited form as: J Control Release. 2020 Feb 12;321:363–371. doi: 10.1016/j.jconrel.2020.02.021

Figure 4.

Figure 4.

In vitro cell uptake study of GPUs. A) Fluorescently labeled GPUs observed dose-dependent NP cellular uptake to A549 cells. B) Representative fluorescence microscopy images observed NP concentration-dependent localization of GPUs (bright green dots) in the lung cancer cells. Scale bar: 30 μm.