AUTHOR=León-Buitimea Angel , Morones-Ramírez Jose Ruben , Yang Jason H. , Peña-Miller Rafael TITLE=Editorial: Facing the Upcoming of Multidrug-Resistant and Extensively Drug-Resistant Bacteria: Novel Antimicrobial Therapies (NATs) JOURNAL=Frontiers in Bioengineering and Biotechnology VOLUME=9 YEAR=2021 URL=https://www.frontiersin.org/journals/bioengineering-and-biotechnology/articles/10.3389/fbioe.2021.636278 DOI=10.3389/fbioe.2021.636278 ISSN=2296-4185