三名美国科学家因为发现了能在细胞分裂时防止染色体散裂的“保护帽”而赢得今年诺贝尔医学奖。
The discovery of a "protective cap" that prevents chromosomes from falling apart when cells divide has earned three American researchers this year's Nobel prize in medicine.
我们身体中的大部分细胞都含有叫作染色体的DNA分子长链。染色体在其两端有保护帽，叫做端粒。
Most of the cells in our bodies contain long molecules of DNA called chromosomes that have protective caps at either end called telomeres.
他们将这些遗传保护帽称为“端粒”（telomere，这一英文单词来自希腊语，意谓末端）。
The researchers called the genetic caps "telomeres", from the Greek for "end part".
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