New Technique Promises Earlier Cancer Detection
A new technique could revolutionize the early detection of cancer, giving sufferers a greater chance of beating the disease, American scientists said. Researchers at the Massachusetts Institute of Technology have devised a novel method of changes in the nucleus of cells in the earliest stages of the disease. More than 85 percent of all cancers originate in the epithelium that lines the internal surfaces of organs the body. Although these are treatable they are diagnosed in one of the preventable stages, early body damages are almost to detect, said scientist Feld. We present a new optical-probe technique based on light-scattering spectroscopy that is able detect pre-cancerous and early cancerous cells in cell-rich epithelia, he added in a statement.
The new technique relies on the fact cell nuclei change in the early stages of cancer and the differences scatter light in a characteristic way. Until now the changes were only detectable a biopsy was taken, the scientists said. The new technique, in the science journal Nature, can be used in conjunction with a routine cancer screening and surveillance technique which uses an endoscope -a flexible optical probe with cameras which is inserted into a cavity in the body-to check cancers.
The scientists said they their new technique in four different organs during routine endoscopic cancer screening. The tip of the optical probe was brought into contact with the tissue to be tested and the scattering of light was recorded without the need for any tissue to be , the scientists said. Our results show that light-scattering spectroscopy has the potential to detect pre-cancerous body damages and pre-invasive cancers throughout the body. This technique should reprove the efficiency of cancer screening and surveillance, the scientists said. Cancer s one of the biggest in industrialized countries. to figures from the World Health Organization, 10 million people were diagnosed with the disease worldwide in 1997 and six million died.
1 A stopping B accelerating C detecting D delaying
2 A with B throughout C without D for
3 A if B unless C whether D whereas
4 A capable B impossible C possible D responsible
5 A for Bat C of D to
6 A when B how C that D why
7 A after B before C although D near
8 A determined B directed C planned D described
9 A contracted B equipped C issued D coping
10 A against B with C for D like
11 A had tested B had to test C have tested D have been testing
12 A covered B removed C found D pressed
13 A severely B doubtfully C hardly D significantly
14 A sufferers B gainers C killers D losers
15 A According B As C Running D Responding
【参考答案】
1. C 2. B 3. A 4. B 5. D
6. C 7. A 8. D 9. B 10. C
11. A 12. B 13. D 14. C 15. A
Japanese nuclear crisis escalates
Shared culture helps build bridges
Bank of America finally exits CCB
Fair brings Hami melons to Beijing
Region urged to facilitate tourism
Shanghai to keep feeling the heat
Guideline issued to strengthen teachers' ethics
UK agents destroy Snowden files at Guardian
Beijing set to host global tourism center
Hong Kong, Shanghai among the elite
A welcome to China's first good Samaritan law
Rubber duck to float in Beijing
New China-US ties promising
Australia's Abbott to scrap carbon tax
Heavy rain expected in quake areas
Extreme heat causing vehicle fires
Fewer Chinese consumers picking Apple's iPhone
China's Christian churches reduce leaders' age ceiling
Eurasian nations focus on Net
Abbott promises to focus on Asia if elected Australian PM
It is lucky 13 for bullish Nadal
Zhang Yimou to team up with schoolmate on new period drama
Zoos rethink matchmaking tactics for endangered species
Chengde-Imperial playground
Some restrictions on Palestinians' daily lives to be lifted for Ramadan
Warning over lavish banquets
Woman delivers 'miracle' baby after H7N9 recovery
Hair thieves prey on Venezuelan women
Kim presides over mass parade
Airports step up security checks
不限 |
英语教案 |
英语课件 |
英语试题 |
不限 |
不限 |
上册 |
下册 |
不限 |