医学英语听力unit3.doc
《医学英语听力unit3.doc》由会员分享,可在线阅读,更多相关《医学英语听力unit3.doc(3页珍藏版)》请在三一文库上搜索。
1、 Antigen and Antibody(抗原和抗体) The human body is quick to (1) recognize foreign organism that enter it. ”Foes” must be attacked or otherwise got rid of. (人体能迅速辨认出进入的外来生物。这些外来的“敌人”一定会受到攻击或被用其他方式摆脱。)The most common of these foes are (2) viruses, bacteria, and other microscopic organisms . The body recog
2、nizes these foes by the chemicals within them called antigens.(最常见的这些敌人是病毒、细菌和微生物。人体通过它们内部称为抗原的化学物质来辨认它们) To (3)counteract there foreign invaders, body produces its own chemicals , protein molecules called (4) antibodies. Each kind of antigen causes the production of a specific kind of antibody .Ant
3、ibodies appear in the 5)body fluids such as blood and lymph and in the bodys cells .(为了抵御外来的入侵者,机体产生自身的化学物质,一种称为抗体的蛋白质分子。每一种抗原导致人体产生一种特殊的抗体,抗体出现在体液中,比如血液和淋巴液,也出现在身体的细胞里。) Doctors learned to make use of the antibody system for defense long before they had any idea that antibodies exist.(医生在发现抗体之前很久就学
4、会了利用抗体系统来防御疾病。) As early as 1796 , Edward Jenner ,an English country doctor , discovered that if he gave people a (6)case of mild disease cowpox , he prevented them from (7)getting the serious disease smallpox .(早在1796年,一个叫爱德华*詹纳的英国乡村医生发现如果他让人患上比较轻的牛痘,他们就不会患上严重的天花疾病。)What Jenner did not know is that
- 配套讲稿:
如PPT文件的首页显示word图标,表示该PPT已包含配套word讲稿。双击word图标可打开word文档。
- 特殊限制:
部分文档作品中含有的国旗、国徽等图片,仅作为作品整体效果示例展示,禁止商用。设计者仅对作品中独创性部分享有著作权。
- 关 键 词:
- 医学 英语听力 unit3
链接地址:https://www.31doc.com/p-6348572.html