AUTHOR=Ferdek Pawel E. , Jakubowska Monika A. , Huang Wei , Petersen Ole H. TITLE=Editorial: Spotlight on the Background Actors - Physiology and Pathophysiology of Supporting, Accessory and Less Common Cell Types in the Gastrointestinal Tract JOURNAL=Frontiers in Physiology VOLUME=11 YEAR=2020 URL=https://www.frontiersin.org/journals/physiology/articles/10.3389/fphys.2020.00766 DOI=10.3389/fphys.2020.00766 ISSN=1664-042X