AUTHOR=Haynes Laura , Bharath Leena P. TITLE=Editorial: Insights in aging and the immune system: 2021 JOURNAL=Frontiers in Aging VOLUME=3 YEAR=2022 URL=https://www.frontiersin.org/journals/aging/articles/10.3389/fragi.2022.999299 DOI=10.3389/fragi.2022.999299 ISSN=2673-6217