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. Author manuscript; available in PMC: 2018 Oct 1.
Published in final edited form as: Cell Mol Bioeng. 2017 Apr 10;10(5):357–370. doi: 10.1007/s12195-017-0486-7

Figure 4.

Figure 4

In vitro characterization of PEG17-PPS28-PBI-PPS28-PEG17 polymersomes with RAW 264.7 macrophages. (a) Cytotoxicity of polymersomes after a 48 h incubation with cells. (b) Cellular uptake of polymersomes after a 3 h incubation with cells. (c) Intracellular fluorescence change of polymersome positive (PS+) cells following endocytosis of polymersomes at 50 μg/mL at different time points. PBS was added to control (ctr) cells instead of polymersomes. Statistical significance: *p ≤ 0.1, **p ≤ 0.05, ***p ≤ 0.001.