Fig. 5
Effects of MSC-Exos or MSC-Exo + NPs on HUVEC proliferation and migration. Light microscopy images (a) and migration rates (b) of HUVECs into scratched monolayer areas following growth in fresh serum-free culture medium containing 50 μg/mL Exos or Exo + NPs for 6, 12, or 24 h. Scale bar = 200 μm. c Proliferation of HUVECs grown in medium containing 50 μg/mL Exos or Exo + NPs detected over 5 days using a cell counting kit. *P < 0.05, and ***P < 0.001