Fig. 5

Cellular uptake of Dil-NPs by the RAW264.7 cells. a Intracellular Dil-NPs (red) were observed by laser scanning confocal microscopy, amplification ×400. b The fluorescence intensity of the intracellular nanoparticles was detected using flow cytometry. Experiments were performed in triplicate; mean ± SD are shown. A P < 0.05 was used to compare the fluorescence intensity of intracellular nanoparticles between the US + Dil-NPs group and the Dil-NPs group