这个词是什么意思？
RNA molecules in which the 3' and 5' ends are covalently joined to form a closed continuous loop. They are resistant to digestion by EXORIBONUCLEASES.
中文名称索引；定义为 MeSH 英文原文，尚未逐条译审。MESH:D000079962 · MeSH 2026。
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