这个词是什么意思？
DNA constructs that are composed of, at least, a REPLICATION ORIGIN, for successful replication, propagation to and maintenance as an extra chromosome in bacteria. In addition, they can carry large amounts (about 200 kilobases) of other sequence for a variety of bioengineering purposes.
中文名称索引；定义为 MeSH 英文原文，尚未逐条译审。MESH:D022202 · MeSH 2026。
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