Derrick Rossi of Harvard University has performed a similar trick using synthetic RNA messenger molecules to mimic the activity of the genes in question.
哈佛大学的德里克·罗斯进行了相似的研究，他使用合成核糖核酸信使分子模仿病变基因的活动。
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The work will enable scientists to start work on drugs that mimic the effects of the healthy genes and so help to prevent Alzheimer's developing in patients who carry mutated variants.
That number has been creeping up, mainly because scientists can now plant foreign genes into creatures so that they better mimic human responses to disease.