美国科学60秒 SSS 2012-11-01
时间：2019-01-08 作者：英语课 分类：Scientific American(十一)月
英语课
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 genes 1 can remain in and infect person’s bones for centuries. A team of UK researchers has been able to isolate 2 such TB sequences through an old skeleton using new rapid DNA 3 sequencing. The proof of concept exercise was performed using the remains 4 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 Proceedings 5 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.
n.基因( gene的名词复数 )
- 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
vt.使孤立，隔离
- 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。
(缩)deoxyribonucleic acid 脱氧核糖核酸
- 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。
n.剩余物，残留物；遗体，遗迹
- 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。
n.进程，过程，议程；诉讼(程序)；公报
- 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