单词：dithiothreitol(DTT)
单词：dithiothreitol(DTT) 相关文章
By Lisa Schlein Geneva 28 February 2007 The World Health Organization held Wednesday a meeting in Geneva to devise strategies aimed at finishing the job of eradicating polio worldwide. Lisa Schlein reports for VOA from WHO headquarters in Geneva tha
2007年VOA标准英语（二月）
By Challiss McDonough Cairo 01 June 2006 Police in the Egyptian capital have arrested at least three people who were trying to get to a small symbolic demonstration outside a police station where an a
2006年VOA标准英语（六月）
Although Zimbabwe President Robert Mugabe's ZANU-PF party has agreed to talks with the opposition Movement for Democratic Change on a possible power sharing arrangement, the country's political violence and intimidation continue. Peta Thornycroft re
VOA标准英语2008年（七月）
Poliomyelitis, known as polio, is a viral disease that can cause paralysis. It once infected millions of people each year, but vaccination efforts around the world have brought the yearly number of new cases to just less than 1000. That dramatic redu
VOA标准英语2011年(三月)
45 国际小儿麻痹预防运动 DATE=5-7-01 TITLE=DEVELOPMENT REPORT - UN Polio Campaign BYLINE=Jill Moss (Start at 1'01
科技之光
By Lisa Schlein Geneva 05 November 2006 Sudanese Red Crescent employee vaccinates a boy against polio in Kalma Camp near southern Darfur (File photo) The ministries of health in both northern and southern Sudan, backed by the U.N. children's fund, t
2006年VOA标准英语（十一月)