AUTHOR=Zavala Flora , Nombela-Arrieta César , Ben Nasr Moufida , Fiorina Paolo TITLE=Editorial: The Role of Hematopoietic Progenitors in Immune Regulation and Memory JOURNAL=Frontiers in Immunology VOLUME=12 YEAR=2021 URL=https://www.frontiersin.org/journals/immunology/articles/10.3389/fimmu.2021.789139 DOI=10.3389/fimmu.2021.789139 ISSN=1664-3224