Fig. 2

Characterization of biomimetic NPs. a CLSM images of RAW 264.7 cells treated with H40-PEG loading FITC NPs and Asp8[H40-FITC@(RBC-H)] NPs for 4 h at 37 ℃ (scale bar = 20 μm). b Fluorescence intensity detection by the flow cytometry. c Stability of Asp8[H40-PEG@(RBC-H)] NPs and H40-PEG NPs in PBS was detected by DLS. d CLSM images of WSU-HN6 cells treated with Asp8[H40-IR780@(RBC-H)] NPs for 5 min (A), 15 min (B), 30 min (C), 1 h (D), and 4 h (E) (scale bar = 25 μm). e The corresponding flow cytometry profiles of WSU-HN6 cells incubated with the biomimetic NPs for different time intervals. f The mean fluorescence intensity analysis after treated with the biomimetic NPs. *** p < 0.001