AUTHOR=Aun Marcelo Vivolo , Blanca-López Natalia , Castells Mariana C. , Giavina-Bianchi Pedro TITLE=Editorial: The Role of Mast Cells in Immediate Hypersensitivity Reactions JOURNAL=Frontiers in Immunology VOLUME=12 YEAR=2021 URL=https://www.frontiersin.org/journals/immunology/articles/10.3389/fimmu.2021.780829 DOI=10.3389/fimmu.2021.780829 ISSN=1664-3224