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美国科学60秒 SSS 2012-11-01

时间：2013-06-20 07:16:44

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（单词翻译）

 Tuberculosis killed 1.4 million people last year. One reason TB is so deadly is that TB bacteria mutate quickly. But some scientists are hoping to get a step ahead of TB’s changes in the future by studying its past evolution. 

 
Remnants of TB genes1 can remain in and infect person’s bones for centuries. A team of UK researchers has been able to isolate2 such TB sequences through an old skeleton using new rapid DNA3 sequencing. The proof of concept exercise was performed using the remains4 of a young woman buried in the 1800s. DNA sequencing showed that her strain matched one that circulated in the US a century ago. That match was based on tissue samples collected from a TB patient in upstate New York in 1905. The finding is on the Proceedings5 of the National Academy of Sciences.
 
Once older boned can be studied for this tale-tell genes, scientists might be able to get new insights into TB’s deadly moves and perhaps anticipate the/its next one.

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1 genes 01914f8eac35d7e14afa065217edd8c0     
n.基因( gene的名词复数 )
参考例句：
  • You have good genes from your parents, so you should live a long time. 你从父母那儿获得优良的基因，所以能够活得很长。 来自《简明英汉词典》
  • Differences will help to reveal the functions of the genes. 它们间的差异将会帮助我们揭开基因多种功能。 来自英汉非文学 - 生命科学 - 生物技术的世纪
2 isolate G3Exu     
vt.使孤立，隔离
参考例句：
  • Do not isolate yourself from others.不要把自己孤立起来。
  • We should never isolate ourselves from the masses.我们永远不能脱离群众。
3 DNA 4u3z1l     
(缩)deoxyribonucleic acid 脱氧核糖核酸
参考例句：
  • DNA is stored in the nucleus of a cell.脱氧核糖核酸储存于细胞的细胞核里。
  • Gene mutations are alterations in the DNA code.基因突变是指DNA密码的改变。
4 remains 1kMzTy     
n.剩余物，残留物；遗体，遗迹
参考例句：
  • He ate the remains of food hungrily.他狼吞虎咽地吃剩余的食物。
  • The remains of the meal were fed to the dog.残羹剩饭喂狗了。
5 proceedings Wk2zvX     
n.进程，过程，议程；诉讼(程序)；公报
参考例句：
  • He was released on bail pending committal proceedings. 他交保获释正在候审。
  • to initiate legal proceedings against sb 对某人提起诉讼

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