AUTHOR=Grammatikakis Ioannis , Karreth Florian A. , Panda Amaresh C. TITLE=Editorial: Structural and Functional Characterization of Circular RNAs JOURNAL=Frontiers in Molecular Biosciences VOLUME=8 YEAR=2021 URL=https://www.frontiersin.org/journals/molecular-biosciences/articles/10.3389/fmolb.2021.795286 DOI=10.3389/fmolb.2021.795286 ISSN=2296-889X