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This is Scientific American's 60-Second Science. I'm Steve Mirsky . Got a minute ?
Germany’s Harald zur Hausen and France’s Luc Montagnier and Francoise Barre-Sinoussi share the 2008 Nobel Prize in Physiology1 or Medicine, awarded October 6th.
Barre-Sinoussi and Montagnier discovered HIV. Shortly after reports in the early 1980s of a new immunodeficiency syndrome2, researchers all over the world raced to find the cause. The two French scientists cultured cells from lymph nodes of patients. They first detected the enzyme3 reverse transcriptase, which meant that a retrovirus was active. Further searching turned up retroviral particles, which could kill white blood cells and which also reacted with antibodies from infected patients. These discoveries made possible unprecedented4 rapid development of blood screening techniques and of new antiviral therapies.
Zur Hausen defied the medical establishment and postulated5 in the 1970s that cervical cancer was caused by the human papilloma virus. He was able to isolate6 viral DNA7 in tumors. He also determined8 that there were multiple kinds of papilloma viruses, and that only some caused cancer. His discovery led to the development of a vaccine9 against cervical cancer.
Thanks for the minute for Scientific American's 60-Second Science. I'm Steve Mirsky .
1 physiology | |
n.生理学,生理机能 | |
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2 syndrome | |
n.综合病症;并存特性 | |
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3 enzyme | |
n.酵素,酶 | |
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4 unprecedented | |
adj.无前例的,新奇的 | |
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5 postulated | |
v.假定,假设( postulate的过去式和过去分词 ) | |
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6 isolate | |
vt.使孤立,隔离 | |
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7 DNA | |
(缩)deoxyribonucleic acid 脱氧核糖核酸 | |
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8 determined | |
adj.坚定的;有决心的 | |
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9 vaccine | |
n.牛痘苗,疫苗;adj.牛痘的,疫苗的 | |
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