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
2016届高考英语一轮复习课件:第二部分 语法专项专练专题四 非谓语动词(北师大版)
2016届高考英语一轮复习课件:第三部分 写作提升系列第一板块 能力层级(一)第2节(北师大版)
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2016届高考英语一轮复习课件:第一部分模块复习方略 选修八 Unit24(北师大版)
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2016届高考英语一轮复习课件:第一部分模块复习方略 必修二 Unit5(北师大版)
2016届高考英语一轮复习课件:第三部分 写作提升系列第二板块 第12节(北师大版)
2016届高考英语一轮复习课件:第一部分模块复习方略 选修六 Unit18(北师大版)
2016届高考英语一轮复习课件:第三部分 写作提升系列第二板块 第13节(北师大版)
2016届高考英语一轮复习课件:第一部分模块复习方略 选修六 Unit17(北师大版)
2016届高考英语一轮复习课件:第三部分 写作提升系列第二板块 第11节(北师大版)
2016届高考英语一轮复习课件:第一部分模块复习方略 必修一 Unit2(北师大版)
2016届高考英语一轮复习课件:第一部分模块复习方略 选修七 Unit19(北师大版)
2016届高考英语一轮复习课件:第一部分模块复习方略 选修七 Unit21(北师大版)
2016届高考英语一轮复习课件:第一部分模块复习方略 必修四 Unit11(北师大版)
2016届高考英语一轮复习课件:第三部分 写作提升系列第二板块 第16节(北师大版)
2016届高考英语一轮复习课件:第三部分 写作提升系列第二板块 第15节(北师大版)
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2016届高考英语一轮复习课件:第一部分模块复习方略 必修一 Unit3(北师大版)
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2016届高三英语一轮复习题组层级快练:(二十)外研版必修4
2016届高考英语一轮复习课件:第一部分模块复习方略 必修四 Unit10(北师大版)
2016届高考英语一轮复习课件:第一部分模块复习方略 必修一 Unit1(北师大版)
2016届高考英语一轮复习课件:第一部分模块复习方略 必修三 Unit8(北师大版)
2016届高考英语一轮复习课件:第三部分 写作提升系列第一板块 能力层级(一)第6节(北师大版)
2016届高考英语一轮复习课件:第一部分模块复习方略 选修八 Unit22(北师大版)
2016届高考英语一轮复习课件:第三部分 写作提升系列第一板块 能力层级(一)第5节(北师大版)
2016届高考英语一轮复习课件:第一部分模块复习方略 必修五 Unit15(北师大版)
2016届高考英语一轮复习课件:第一部分模块复习方略 选修七 Unit20(北师大版)