这个词是什么意思？
A DNA-dependent RNA polymerase present in bacterial, plant, and animal cells. It functions in the nucleoplasmic structure where it transcribes DNA into RNA. It has specific requirements for cations and salt and has shown an intermediate sensitivity to alpha-amanitin in comparison to RNA polymerase I and II.
中文名称索引；定义为 MeSH 英文原文，尚未逐条译审。MESH:D012320 · MeSH 2026。
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