AUTHOR=Lei Bo , Boccaccini Aldo R. , Chen Xiaofeng TITLE=Editorial: Multifunctional Bioactive Nanomaterials for Tissue Regeneration JOURNAL=Frontiers in Chemistry VOLUME=7 YEAR=2019 URL=https://www.frontiersin.org/journals/chemistry/articles/10.3389/fchem.2019.00679 DOI=10.3389/fchem.2019.00679 ISSN=2296-2646