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. 2021 Jun 24;21:319. doi: 10.1186/s12935-021-02026-3

Fig. 4.

Fig. 4

Assessment of exosomal uptake in endothelial cells. Fluorescence photomicrographs showing HUVEC after 6 h incubation with SiHa, HeLa, and C33a-derived exosomes (50 μg/0.5 ml) labelled with PKH-67 dye (green). HUVEC were fixed in cold methanol and nuclei were counterstained with DAPI (blue; magnification—630×)