AUTHOR=Sumagin Ronen , Henson Sian M. , Morrison Vicky L. , McGettrick Helen M. TITLE=Editorial: Targeting Leukocyte Trafficking: Insights and Future Directions JOURNAL=Frontiers in Immunology VOLUME=12 YEAR=2021 URL=https://www.frontiersin.org/journals/immunology/articles/10.3389/fimmu.2021.777002 DOI=10.3389/fimmu.2021.777002 ISSN=1664-3224