AUTHOR=Rissiek Björn , Guse Andreas H. , Adriouch Sahil , Bruzzone Santina TITLE=Editorial: The Versatile Role of Nicotinamide Adenine Dinucleotide in Immunity JOURNAL=Frontiers in Immunology VOLUME=12 YEAR=2021 URL=https://www.frontiersin.org/journals/immunology/articles/10.3389/fimmu.2021.810280 DOI=10.3389/fimmu.2021.810280 ISSN=1664-3224