这个词是什么意思？
The most abundant form of RNA. Together with proteins, it forms the ribosomes, playing a structural role and also a role in ribosomal binding of mRNA and tRNAs. Individual chains are conventionally designated by their sedimentation coefficients. In eukaryotes, four large chains exist, synthesized in the nucleolus and constituting about 50% of the ribosome. (Dorland, 28th ed)
中文名称索引；定义为 MeSH 英文原文，尚未逐条译审。MESH:D012335 · MeSH 2026。
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