AUTHOR=Guo Rui , Wu Gang TITLE=Editorial: Advanced Biomaterials and Systems Releasing Bioactive Agents for Precise Tissue Regeneration JOURNAL=Frontiers in Bioengineering and Biotechnology VOLUME=9 YEAR=2021 URL=https://www.frontiersin.org/journals/bioengineering-and-biotechnology/articles/10.3389/fbioe.2021.763685 DOI=10.3389/fbioe.2021.763685 ISSN=2296-4185