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
2015秋牛津译林版英语九上Unit 2《Colours》(Speak up)word导学案
2015秋牛津译林版英语九上Unit 1《Know yourself》word集体备课教案
牛津英语9A Unit 3 重点短语句子一网打尽(双语)
2015秋牛津译林版英语九上Unit 2《Colours》(Welcome to the unit)word导学案
2015秋牛津译林版英语九上Unit 1《Know yourself》(Task)word导学案
牛津译林版九上全册教案-unit2
牛津9A第三单元句型讲解和练习
2015秋牛津译林版英语九上Unit 2《Colours》(Reading)word导学案
牛津译林版九上《Unit 2 Colour》word导学案(10课时)
牛津译林版英语九上《Unit 2 Colour》word教案3篇
牛津9A Unit4教案(共10课时)
牛津译林版九上《Unit 3 Teenage problems》word教案
牛津译林版英语九上《Unit 4 TV programmes》word教案5篇
牛津9A Unit3 全套教学设计(表格式)
牛津9A Unit5全部完整教案
牛津9A 词组汇总
牛津译林版九上《Unit 2 Colour》word教案
牛津9A Unit4 词组
牛津9A Unit6教案(共10课时)
牛津9A Unit5教案(共10课时)
2015秋牛津译林版英语九上Unit 1《Know yourself》(reading)word导学案
2015秋牛津译林版英语九上Unit 1《Know yourself》(Welcome)word导学案
牛津9A Unit1 Star signs 教案
2015秋牛津译林版英语九上Unit 2《Colours》(Integrated skills)word导学案
2015秋牛津译林版英语九上Unit 1《Know yourself》(Reading1)word学案
牛津9A Unit6 教案全集
2015秋牛津译林版英语九上Unit 1《Know yourself》(Speak up)word导学案
牛津译林版九上全册教案-unit3
2015秋牛津译林版英语九上Unit 2《Colours》(Task)word导学案
牛津译林版英语九上《Unit 1 Star signs》word学案4篇
不限 |
英语教案 |
英语课件 |
英语试题 |
不限 |
不限 |
上册 |
下册 |
不限 |