Fig. 3From: Plasma-derived small extracellular vesicles unleash the angiogenic potential in head and neck cancer patientsPlasma sEVs are internalized by HUVECs. Confocal microscopy of HUVECs after 4 h incubation with 20 µg PKH67-stained sEVs (upper row) or stained PBS as control (lower row). Magnification = 40x, scale = 20 µmBack to article page