一种独特的诊断试验可以快速检测传染病-凯发k8官网

一种独特的诊断试验可以快速检测传染病
文章来源:未知 文章作者:enread 发布时间:2015-07-07 06:05 字体: [ ] 
(单词翻译:双击或拖选)
infectious diseases such as hepatitis c and some of the world's deadliest superbugs--c. difficile and mrsa among them--could soon be detected much earlier by a unique diagnostic test, designed to easily and quickly identify dangerous pathogens. researchers at mcmaster university have developed a new way to detect the smallest traces of metabolites, proteins or fragments of 1. in essence, the new method can pick up any compound that might signal the presence of infectious disease, be it respiratory or gastrointestinal. 
 
"the method we have developed allows us to detect targets at levels that are unprecedented," says john brennan, director of mcmaster's biointerfaces institute, where the work was done. this new method is described online in the journal angewandte chemie international edition.
 
"the test has the best sensitivity ever reported for a detection system of this kind - it is as much as 10,000 times more sensitive than other detection systems," he says.
 
using sophisticated techniques, researchers developed a 2 device made of dna that can be switched 'on' by a specific 3 of their choice--such as a certain type of disease 4 or dna molecule representing a genome of a virus--an action that leads to a massive, 5 signal which can be easily 6.
 
another important advantage of the new test, say researchers, is that the method does not require complicated equipment so tests can be run at room temperature under ordinary conditions.
 
"this will be the foundation for us to create future diagnostic tests", explains yingfu li, a professor in the departments of biochemistry and biomedical sciences, chemistry and chemical biology. 
 
"this invention will allow us to detect anything we might be interested in, 7 contamination or perhaps a protein molecule that is a cancer marker. our method can sensitively detect all of them, and it can do so in a 8 short period of time."


点击收听单词发音收听单词发音  

1 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。
2 me9xh     
adj.分子的;克分子的
参考例句:
  • the research will provide direct insight into molecular mechanisms.这项研究将使人能够直接地了解分子的机理。
  • for the pressure to become zero, molecular bombardment must cease.当压强趋近于零时,分子的碰撞就停止了。
3 y6tzn     
n.分子,克分子
参考例句:
  • a molecule of water is made up of two atoms of hygrogen and one atom of oxygen.一个水分子是由p妈?f婘??妈?成的。
  • this gives us the structural formula of the molecule.这种方式给出了分子的结构式。
4 i8nxm     
n.指标;指示物,指示者;指示器
参考例句:
  • gold prices are often seen as an indicator of inflation.黃金价格常常被看作是通货膨胀的指标。
  • his left-hand indicator is flashing.他左手边的转向灯正在闪亮。
5 d305c65f3ed83c07379c830f9ade119d     
放大,扩大( amplify的过去式和过去分词 ); 增强; 详述
参考例句:
  • he amplified on his remarks with drawings and figures. 他用图表详细地解释了他的话。
  • he amplified the whole course of the incident. 他详述了事件的全过程。
6 7feyj     
adj.有斑点的,斑纹的,弄污了的
参考例句:
  • the milkman selected the spotted cows,from among a herd of two hundred.牛奶商从一群200头牛中选出有斑点的牛。
  • sam's shop stocks short spotted socks.山姆的商店屯积了有斑点的短袜。
7 dy5z8q     
a.细菌的
参考例句:
  • bacterial reproduction is accelerated in weightless space. 在失重的空间,细菌繁殖加快了。
  • brain lesions can be caused by bacterial infections. 大脑损伤可能由细菌感染引起。
8 bkqzs3     
adv.比较...地,相对地
参考例句:
  • the rabbit is a relatively recent introduction in australia.兔子是相对较新引入澳大利亚的物种。
  • the operation was relatively painless.手术相对来说不痛。
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