A single mutation, a different sequence in the DNA, causes the ribosome to use a different amino acid when it builds the lysozyme molecule.

单一突变，dna序列发生变化，会造成核糖体在构建溶解酵素分子时使用不同的氨基酸。

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Researchers have discovered that some people have a rare genetic mutation that decreases their cells' use of a particular growth hormone: insulin-like growth factor 1 (IGF1).

研究人员发现了一些人已经发生了极少量的基因变异，这种变异减少了细胞对某种生长激素（即，胰岛素样生长因子1（IGF1)）的使用。

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Why did you choose this statement? Why do you not use any EGFR mutation testing on your patients?

您为什么会选择这种说法？为什么对于您的患者您不采用任何EGFR基因突变检测？

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Then, instead of administering a one-size-fits-all drug, doctors would use one that addresses the specific mutation.

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For example, lung patients with the bad EGFR mutation might be able to use the drug after surgery to prevent a reoccurrence of the disease.

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He predicts that the finding could expand the use of Erbitux in patients who do not have a kras mutation.

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