这个词是什么意思？
Techniques to alter a gene sequence that result in an inactivated gene, or one in which the expression can be inactivated at a chosen time during development to study the loss of function of a gene.
中文名称索引；定义为 MeSH 英文原文，尚未逐条译审。MESH:D055786 · MeSH 2026。
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