Researchers may have finally found a drug candidate for reducing the mental retardation caused by Down syndrome, which afflicts more than 350,000 people in the U. S.

研究者可能最终发现一种药物能够减轻唐综合症导致的精神迟滞，在美国已经困饶35万多人。

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In July, culminating a three-year search, DeCode pinpointed a gene for schizophrenia, an illness that afflicts Stefansson's brother.

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The same incomprehension afflicts the president's policy toward Israel.

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The biggest prize lies in a treatment for Alzheimer's disease, which afflicts 4 million Americans.

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