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. 2020 Jun 25;15:4591–4606. doi: 10.2147/IJN.S245188

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© 2020 Li et al.

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Representative confocal microscopy images of ART-FITC and mPEG-PCL-ART-FITC-NPs endocytosed by fibroblast cells for 2, 4, 6, 12 and 24 h. The scale bar is 50 µm.