AUTHOR=Pizzicannella Jacopo , Gugliandolo Agnese , Orsini Tiziana , Fontana Antonella , Ventrella Alessia , Mazzon Emanuela , Bramanti Placido , Diomede Francesca , Trubiani Oriana TITLE=Addendum: Engineered extracellular vesicles from human periodontal-ligament stem cells increase VEGF/VEGFR2 expression during bone regeneration JOURNAL=Frontiers in Physiology VOLUME=14 YEAR=2023 URL=https://www.frontiersin.org/journals/physiology/articles/10.3389/fphys.2023.1148929 DOI=10.3389/fphys.2023.1148929 ISSN=1664-042X