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Flow cytometry profiles showed different cellular uptake of blank control (blue), free Cur (green), Cur loaded PLGA NPs (orange), Cur loaded lpNPs with Chol–PEG–RGD (red) and Cur loaded lpNPs without Chol–PEG–RGD (jasper) by human umbilical vein endothelial cells (HUVEC) (containing 40 ng/mL coumarin at 37 °C for 1 h).
