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
七年级下册英语单词表
初一下册英语单词:Unit9-10
小学一年级英语作文:我最喜欢的颜色(The Color I Love Best)
小学一年级英语作文:一个快乐的女孩(A happy girl )
七年级上册英语单词表
初一上册英语单词:Unit9-10
小学一年级英语作文:Radio and television
小学生一年级英语作文:我自己(My self)
小学一年级英语作文:It's cool behind you
小学一年级英语作文:The best job
初一上册英语单词:Unit1-2
初一上册英语单词:Unit11-12
小学一年级英语作文:梦里成为志愿者
小学一年级英语学习 :Unit8 Playtime (牛津小学英语)
小学一年级英语作文:I don't think so
小学一年级英语作文:What are stars like?
小学一年级英语学习 :Unit5 Fruits(牛津小学英语)
小学生一年级英语作文:我的老师(My teather)
小学生一年级英语作文:我的可爱老师(My Lovely Teacher)
小学一年级英语学习 :Unit3 My abilities(牛津小学英语)
小学生一年级英语作文:我是谁?(Who am I?)
小学一年级英语作文:我的英国朋友(My English friend)
盘点有关black的习语和表达方式
初一下册英语单词:Unit11-12
初一上册英语单词:Unit5-6
初中一年级英语全册重点词汇总
小学生一年级英语作文:我的家乡(My hometown)
小学生一年级英语作文:我的兔子(My rabbit)
初一下册英语单词:Unit5-6
小学一年级英语作文:Father's hobby
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英语教案 |
英语课件 |
英语试题 |
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不限 |
上册 |
下册 |
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