这个词是什么意思？
A single-stranded DNA-dependent RNA polymerase that functions to initiate, or prime, DNA synthesis by synthesizing oligoribonucleotide primers. EC 2.7.7.-.
中文名称索引；定义为 MeSH 英文原文，尚未逐条译审。MESH:D019915 · MeSH 2026。
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