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
通知
画蛇添足(Add Feet)
远离交通事故(Stay Away from Traffic Accidents)
杭州(MYCITY)
中考英语辅导:互联网(TheInternet)
日记(English Diary)
我最要好的朋友(My Best Friend)
意外(An Accident)
传统的节日(Traditional festional)
伟大的中国,我爱你!(Great China, I love you!)
中考英语辅导:上学路上(OnMyWaytoSchool)
中考英语辅导:新鲜空气(FreshAir)
篮球是我的最爱(Basketball is My Favorite)
保卫地球(Saving the Earth)
老师,我要感谢你(I want to thank you,teacher)
中学生正确的放松方式(The proper ways for students to relax)
关于中学生饮食健康的
我的家乡(My Home Town)
介绍朋友的生活与饮食习惯
女性不如男性吗?(Are Women Inferior to Men?)
国庆节作文:A Wonderful Traveling
比较美国的初中生活和中国的初中生活有什么不同
我繁忙的学习生活(My busy study life)
做三明治的过程
散步(Walking)
对班级群体活动的看法(Comment on class group activity)
中考英语辅导:我的星期天(MySunday)
未来的生活(Life in the future)
中考英语书面表达常犯错误分析
给予礼品(Giving a Gift)
不限 |
英语教案 |
英语课件 |
英语试题 |
不限 |
不限 |
上册 |
下册 |
不限 |