AUTHOR= Frontiers Editorial Office TITLE=Retraction: Oral administration of brain protein combined with probiotics induces immune tolerance through the tryptophan pathway JOURNAL=Frontiers in Molecular Neuroscience VOLUME=16 YEAR=2023 URL=https://www.frontiersin.org/journals/molecular-neuroscience/articles/10.3389/fnmol.2023.1279716 DOI=10.3389/fnmol.2023.1279716 ISSN=1662-5099