单词：clonal deletion
单词：clonal deletion 相关文章
...lead to the end of diseases like cancer... Alzheimer's , Parkinson's , diabetes. The list is endless. We were thinking of genes in a very mechanical way. We were thinking of them just in terms of t
基因外遗传现象
Nalini Nadkarni挑战我们对于树木及监狱的传统观点，她认为这两者都比我们所想得更具活力。经由与华盛顿州政府的合作，她将科学课程及保育计划引进给受刑囚犯，并得到超乎预期的效果。
TED公开课:罪与罚
At 75, Seminal US Composer Still Inspires American composer Steve Reich turned 75 this year. The so-called minimalist credits jazz, African drumming and Balinese gamelan as inspirations. His music - from experimental tape loops to the Pulitzer prize-
VOA标准英语2011年(十一月)
Cloze: Stingers of the Sea 海中刺客 ── 水母 Given impressive-sounding names like Portuguese man-of-war, jellyfish are certainly respected and feared by humans. Not exactly a fish, and lacking a spine, this creature has a single body cavity
双语有声阅读
Today we're going to talk about keeping a journal. If you're an aspiring writer, you've probably heard that writers should keep a writing journal. The first time I kept a real writing journal was in my freshman English class in college, so since it's
英语语法 Grammar Girl
By Anya Ardayeva Moscow 12 October 2006 watch Slain Russian Journalist report One of Russia's most prominent journalists, Anna Politkovskaya, was buried in a Moscow cemetery Tuesday after she was shot dead in her apartment building on Saturday. The
2006年VOA标准英语（十月）
NB: This is not a word for word transcript Stephen: Hello, I'm Stephen. Rob: And I'm Rob. Stephen: And this is 6 Minute English! This week were talking about citizen journalism. Rob: Citizen journalism thats when people who arent trained journalists
六分钟英语
This is Scientific Americans 60-Second Science, I'm Steve Mirsky. Got a minute? Ever-increasing numbers of people are consuming news via the Internet and cell phones. In London last week at the World Conference of Science Journalists, Philip Hilts, t
Scientific American(七)月
By Lisa Schlein Geneva 22 March 2006 A new report by the Norwegian Refugee Council says the number of people internally displaced within their own countries by conflict decreased slightly during 2005,
2006年VOA标准英语（三月）
DEVELOPMENT REPORT – July 22, 2002: Maternal Deaths Study By Jill Moss This is Bill White with the VOA Special English Development Report. Each year, more than five-hundred-thousand women in develop
农业与发展
By Jeff Swicord Baltimore, Maryland 27 April 2006 watch Ethnic Neighborhoods As the immigration debate rages in the United States, Jeff Swicord takes a look at one of the original immigrant neighborho
2006年VOA标准英语（四月）
By Robert Berger Jerusalem 01 April 2006 Ismail Haniyeh looks on as he receives congratulations from ministers and diplomats at the Council of Ministers in Gaza City The Islamic militant group Hamas i
2006年VOA标准英语（四月）
By Jim Teeple Ramallah 23 January 2006 Politicians in the Palestinian territories wrapped up final day of campaigning Monday, ahead of crucial vote Wednesday to elect new legislature Politicians in th
2006年VOA标准英语（一月）
Oum Sok began working as a cyclo driver when he was 18. He says the city has become very expensive over the years, making it much harder to earn a living. New York has its yellow cab. London has its red bus. But Phnom Penh has its cyclo - a three-whe
VOA标准英语2010年(六)月
The State Department said Thursday an agreement for the start of direct peace talks between Israel and the Palestinians is close to completion. The deal will apparently be sealed by statements from the United States and the International Middle East
VOA标准英语2010年(八)月
IndiaSeekstoCounterInternalTerroristThreat Top Indian officials say they need to prepare for terrorism threats that may arise both within and outside the country. Indian Home Minister P. Chidambaram on Thursday described recent terror attacks on Indi
VOA标准英语2011年(九月)
ENVIRONMENT REPORT — April 12, 2002: Medicinal Plant Conservation By Mario Ritter This is the VOA Special English ENVIRONMENT REPORT. Throughout history, people around the world have used traditiona
健康与环境
Scientists Study Genetic Basis of Autism Scientists have taken another big step toward identifying the genetic flaws which may cause autism, a type of neurological development disorder. In the latest development, laboratory mice have been genetically
VOA标准英语2011年(十月)