AUTHOR=Rogers Thomas J. , Roy Sabita TITLE=Editorial: The Role of Opioid Receptors in Immune System Function JOURNAL=Frontiers in Immunology VOLUME=12 YEAR=2022 URL=https://www.frontiersin.org/journals/immunology/articles/10.3389/fimmu.2021.832292 DOI=10.3389/fimmu.2021.832292 ISSN=1664-3224