AUTHOR=Volpi Claudia , Van den Eynde BenoƮt J , Orabona Ciriana TITLE=Editorial: Heme proteins: key players in the regulation of immune responses JOURNAL=Frontiers in Immunology VOLUME=14 YEAR=2023 URL=https://www.frontiersin.org/journals/immunology/articles/10.3389/fimmu.2023.1263384 DOI=10.3389/fimmu.2023.1263384 ISSN=1664-3224