男女羞羞视频在线观看,国产精品黄色免费,麻豆91在线视频,美女被羞羞免费软件下载,国产的一级片,亚洲熟色妇,天天操夜夜摸,一区二区三区在线电影
English 中文網 漫畫網 愛新聞iNews 翻譯論壇
中國網站品牌欄目(頻道)
當前位置: Language Tips > Special Speed News VOA慢速

New research hopes to speed development of HIV vaccine(視頻)

[ 2012-08-30 14:15]     字號 [] [] []  
免費訂閱30天China Daily雙語新聞手機報:移動用戶編輯短信CD至106580009009

Get Flash Player(字幕對照)

Get Flash Player(文本完全對照)

Download

This is the VOA Special English Technology Report.

A team of scientists in the United States has created a new type of mouse that has an immune system similar to that of humans. The scientists hope their research with these mice will speed up development of a vaccine to prevent human immunodeficiency virus, or HIV.

Scientists from the Ragon Institute of Massachusetts General Hospital, Massachusetts Institute of Technology and Harvard are carrying out the new research.

Earlier research has shown that certain individuals with HIV have immune systems that do better at controlling the AIDS virus. These individuals are commonly known as “elite controllers.” They often live longer with the virus and have fewer problems early on.

Todd Allen is one of the lead writers of the new study, which was published in Science Translational Medicine.

TODD ALLEN: “Some people are able to control HIV very well, to very low copies. And what we know is that they express a certain type of host genetics that dictate that they target very critical regions of the virus.”

By using the new experimental mice, the researchers hope to learn what it is about the immune systems of these “elite controllers” that causes them to deal with the HIV virus better than others.

The “humanized” mice were created using stem cells and tissues from human donors. Some of this tissue was taken from liver and thymus tissue. The thymus is a large gland at the bottom of the throat. It trains T-lymphocytes, or T-cells to attack unwelcome microbes, thereby protecting the body from infection.

When the scientists infected the so-called “humanized” mice with the HIV virus, the T-cell reaction in the mice was the exact same as that of humans.

Earlier research using rhesus monkeys helped scientists understand how the virus attacks cells. These monkeys were seen as good replacements for humans because they could be easily infected with a primate version of HIV, known as SIV.

However, genetic differences in the two versions of the virus and the immune systems suggested that the monkeys were not the best candidates for HIV research.

Todd Allen says the experiments with the new “humanized” mouse more correctly reflected what happens in humans with the AIDs virus.

TODD ALLEN: “So it allows us to take all the discoveries we’ve had in studying individuals infected with HIV in the different immune responses and host genetics that correlate with a better outcome, and translate that now into an animal model where we can actually further manipulate that to understand exactly how these individuals are doing that.”

Mr. Allen and the other researchers hope further studies with the “humanized” mouse will lead to an HIV vaccine.

And that's the VOA Special English Technology Report, Jessica Berman and June Simms, contributing. I'm Steve Ember.

相關閱讀

More universities offer free online courses(視頻)

Connecting employers with jobs seekers in today's economy(視頻)

Officials say New Orleans is better protected(視頻)

Coney Island Amusement Park still up and spinning(視頻)

(來源:VOA 編輯:Julie)

 
中國日報網英語點津版權說明:凡注明來源為“中國日報網英語點津:XXX(署名)”的原創作品,除與中國日報網簽署英語點津內容授權協議的網站外,其他任何網站或單位未經允許不得非法盜鏈、轉載和使用,違者必究。如需使用,請與010-84883631聯系;凡本網注明“來源:XXX(非英語點津)”的作品,均轉載自其它媒體,目的在于傳播更多信息,其他媒體如需轉載,請與稿件來源方聯系,如產生任何問題與本網無關;本網所發布的歌曲、電影片段,版權歸原作者所有,僅供學習與研究,如果侵權,請提供版權證明,以便盡快刪除。
 

關注和訂閱

人氣排行

翻譯服務

中國日報網翻譯工作室

我們提供:媒體、文化、財經法律等專業領域的中英互譯服務
電話:010-84883468
郵件:translate@chinadaily.com.cn
 
 
主站蜘蛛池模板: 巨鹿县| 昆明市| 融水| 赣榆县| 乐山市| 吕梁市| 邵东县| 凉山| 临安市| 莆田市| 垫江县| 华安县| 兴义市| 通渭县| 庆阳市| 明星| 新营市| 大悟县| 大余县| 榆树市| 湖北省| 太仓市| 阳新县| 阜新| 文水县| 涟水县| 揭东县| 眉山市| 元阳县| 肇庆市| 马公市| 涞水县| 临汾市| 九寨沟县| 新余市| 泸溪县| 聂拉木县| 陇川县| 额尔古纳市| 渭源县| 集安市| 灵川县| 会东县| 聂拉木县| 冕宁县| 五河县| 大英县| 渝北区| 普定县| 葵青区| 肇庆市| 全南县| 揭东县| 镇江市| 上饶县| 清镇市| 讷河市| 嫩江县| 丰顺县| 南岸区| 离岛区| 扎兰屯市| 德化县| 临漳县| 汽车| 墨竹工卡县| 德清县| 平塘县| 靖远县| 济源市| 太保市| 东海县| 永宁县| 长汀县| 柘城县| 皋兰县| 德阳市| 宜兰县| 安徽省| 武川县| 安岳县| 绥芬河市|