Fig. 4From: Magnetic targeting enhances the cutaneous wound healing effects of human mesenchymal stem cell-derived iron oxide exosomesMSC-Exo and MSC-Exo + NP internalization. Confocal microscopy images showing Exos and Exo + NP incorporation in HUVECs. Blue indicates DAPI staining of the nucleus. Red indicates DiD-labeled Exos or Exo + NPs. Red arrows show cytoplasmic NPs in bright field. Scale bar = 10 μmBack to article page