The researchers found that taking folic acid halfway through pregnancy had no effect.
研究者发现在孕期中间服用叶酸没有效果。
Genes are instruction manuals for cells to make proteins, but nonsense mutations in effect introduce a command halfway through that stops production.
基因是细胞合成蛋白的指导手册，但是无意突变半途增加了指令并通过该指令停止了合成。
Genes are instruction manuals for cells to make proteins, but nonsense mutations in effect introduce a command halfway through that stops production.
基因是细胞合成蛋白的指导手册，但是无意突变半途增加了指令并通过该指令停止了合成。
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