AUTHOR=Bonorino Cristina , Mognol Giuliana TITLE=Editorial: T Cell Exhaustion JOURNAL=Frontiers in Immunology VOLUME=11 YEAR=2020 URL=https://www.frontiersin.org/journals/immunology/articles/10.3389/fimmu.2020.00920 DOI=10.3389/fimmu.2020.00920 ISSN=1664-3224