Erratum: PDLSCs Regulate Angiogenesis of Periodontal Ligaments via VEGF Transferred by Exosomes in Periodontitis (Int J Med Sci 2020; 17(5): 558-567 (10.7150/ijms.40918))

The authors regret that the original version of our paper unfortunately contained some incorrect representative images. The transwell images of tube formation in Figure 3C had been misused during figure assembly. The correct version of the Figure 3C appears below. The authors confirm that the corrections made in this erratum do not affect the original conclusions. The authors apologize for any inconvenience that the errors may have caused.