Fig. 3.

HUVECs uptake exosomes released from RPE cells. HUVECs were incubated with the indicated concentration of PKH26-labelled exosomes for 1 h, and incorporated exosomes (red) were detected by fluorescence microscopy. Nuclei were stained with DAPI. Scale bar, 20 μm. (For interpretation of the references to colour in this figure legend, the reader is referred to the Web version of this article.)