AUTHOR=Sheng Yong Hua , Zhang Li TITLE=Editorial: The mucosal barrier to infection JOURNAL=Frontiers in Cellular and Infection Microbiology VOLUME=13 YEAR=2023 URL=https://www.frontiersin.org/journals/cellular-and-infection-microbiology/articles/10.3389/fcimb.2023.1141131 DOI=10.3389/fcimb.2023.1141131 ISSN=2235-2988