单词:immune defense
单词:immune defense 相关文章
【背景】 血型分类: 一般常见A、B、AB和O四种,另外还有RH、MNS、P等极为稀少的10余种血型系统。其中,AB型可以接受任何血型的血液输入,因此被称作万能受血者,O型可以输出给任何血型的人
This is the VOA Special English Health Report. Scientists may have found a way to reduce shortages of type O blood. Type O is the kind of blood that hospitals most often need. What the researchers are testing is an easier way to make type O blood ou
Researchers have developed an improved version of the smallpox vaccine that can be combined with a vaccine against anthrax. The dual vaccine represents a significant scientific achievement as well as a possible improved defense against biological att
It starts with a tickle in your throat that becomes a cough. 你一开始是喉咙痒,而后转为咳嗽。 Your muscles begin to ache, you grow irritable, and you lose your appetite. It's official: you've got the flu. 肌肉开始疼痛,逐渐烦躁
SCIENCE IN THE NEWS - Autoimmune Diseases Threaten The Body's Natural Defense For Fighting DiseaseBy Brianna Blake Broadcast: Tuesday, November 21, 2006 VOICE ONE: This is SCIENCE IN THE NEWS, in VOA
SCIENCE IN THE NEWS -July 9, 2002: Tuberculosis By Oliver Chanler VOICE ONE: This is Bob Doughty. VOICE TWO: And this is Steve Ember with Science in the News, a VOA Special English program about recen