AUTHOR=Hofmann Maike , Jandus Camilla , Lee Lian Ni , Utzschneider Daniel T. TITLE=Editorial: Memory T Cells in Chronic Infections and Tumors JOURNAL=Frontiers in Immunology VOLUME=12 YEAR=2021 URL=https://www.frontiersin.org/journals/immunology/articles/10.3389/fimmu.2021.656010 DOI=10.3389/fimmu.2021.656010 ISSN=1664-3224