AUTHOR=Arechaga Ignacio , Cascales Eric TITLE=Editorial: Bacterial Secretion Systems, Volume II JOURNAL=Frontiers in Microbiology VOLUME=13 YEAR=2022 URL=https://www.frontiersin.org/journals/microbiology/articles/10.3389/fmicb.2022.917591 DOI=10.3389/fmicb.2022.917591 ISSN=1664-302X