雅思閱讀的模擬習(xí)題訓(xùn)練
Alok Jha, science correspondent
Thursday January 11, 2014
The Guardian1. British scientists are preparing to launch trials of a radical new way to fight cancer, which kills tumours by infecting them with viruses like the common cold.
2. If successful, virus therapy could eventually form a third pillar alongside radiotherapy and chemotherapy in the standard arsenal against cancer, while avoiding some of the debilitating side-effects.
3. Leonard Seymour, a professor of gene therapy at Oxford University, who has been working on the virus therapy with colleagues in London and the US, will lead the trials later this year. Cancer Research UK said yesterday that it was excited by the potential of Prof Seymours pioneering techniques.
4. One of the countrys leading geneticists, Prof Seymour has been working with viruses that kill cancer cells directly, while avoiding harm to healthy tissue. In principle, youve got something which could be many times more effective than regular chemotherapy, he said.
5. Cancer-killing viruses exploit the fact that cancer cells suppress the bodys local immune system. If a cancer doesnt do that, the immune system wipes it out. If you can get a virus into a tumour, viruses find them a very good place to be because theres no immune system to stop them replicating. You can regard it as the cancers Achilles heel.
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