单词：
单词： 相关文章
New TB Vaccine Passes Safety Tests Tuberculosis continues to be a major threat around the world, especially in developing countries. A new vaccine has gone into testing, and the results may change how childhood vaccinations are given. TB kills 1.8 mi
VOA标准英语2011年(六月)
Pathogens with added genes from Arctic bacteria could serve as vaccines that elicit an immune response before getting cooked in our warm bodies. Some bacteria have adapted to super cold environments for millions of years. And scientists have isolated
60秒科学
HIV Vaccine Research 艾滋病疫苗研究 Two years ago, Jason Brenchley took part in an HIV vaccine trial sponsored by the U.S. National Institutes of Health. An NIH researcher himself, Mr. Brenchle
VOA2005（上）--环境科学探索
Stem Cell Therapy Effective Against HIV Virus in Mice The actual stem cells were injected in my arm, said Diana Souza. Diana Souza says stem cell therapy helped restore full use of her severely fractured arm. It is a miracle. It does work. And I have
VOA标准英语2012年(五月)
Clues Found for AIDS Vaccine Trial Success In 2009, a study in Thailand proved for the first time that an AIDS vaccine was possible. But scientists were not sure why it offered some protection. Now they have some clues. The Thailand study looked at a
VOA标准英语2012年(四月)
台湾籍旅美老师今天交给我们的句子是： Sleeping isn't lost time, or just a way to rest when all our important work is done. Instead, it's a critical function, during which your body balances and regulates its vital systems, effecting
留美老师带你每日说英文