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This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. Can we be too clean? According to what's called the hygiene hypothesis, yes. Without being challenged as kids, our immune systems don't flourish. Scien
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Good Friday afternoon to you, I'm Naamua Delaney at the CNN Center in Atlanta. Here's a look at what's happening NOW IN THE NEWS. US war planes have struck several targets in Basra and Sadar city in the fight between Iraqi forces and Shiite militant
商业报道2008年(三)月
Dr. Anthony Fauci doesn't get too excited about the results of animal studies, and he doesn't make house calls. 对于动物研究的结果，安东尼弗契博士并不是那么激动，他也从不上门亲访。 But when a drug already taken by th
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New TB Drug Regimen Launched in Africa, South America With nearly 4000 people dying of tuberculosis each day around the world, public health officials say TB control efforts urgently need new drugs. The clinical trials being launched by the TB Allian
VOA标准英语2012年(三月)
Tough TB Responds to Drug Treatment An antibiotic used to treat severe infections shows promise against a very resistant and deadly form of tuberculosis. XDR-TB is resistant to at least four of the drugs used most often against the disease. Extensive
VOA标准英语2012年(十月)
WASHINGTON, Nov. 18 (Xinhua) -- The U.S. Food and Drug Administration (FDA) on Friday approved Erwinaze to treat patients with acute lymphoblastic leukemia (ALL), who have developed an allergy to E. coli derived asparaginase and pegapargase chemother
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