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About the Cover

Cover Figure


COVER Secondary structures of 16S ribosomal RNA and transfer RNA, showing their respective base-pairing schemes. Colored bars indicate end-to-end stacking of individual helices to form longer, continuous coaxial arms. See page 1507. [Image: A. Baucom and H. Noller]

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Science. ISSN 0036-8075 (print), 1095-9203 (online)