Electron microscopic evidence for the circular form of RNA in the cytoplasm of eukaryotic cells
HSU M, COCA-PRADOS M. Electron microscopic evidence for the circular form of RNA in the cytoplasm of eukaryotic cells. Nature 1979, 280: 339-340. PMID: 460409, DOI: 10.1038/280339a0.Peer-Reviewed Original Research