首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
Gene therapy and gene based drugs are two ways we could benefit from our growing mastery of genetic science. But there will be o
Gene therapy and gene based drugs are two ways we could benefit from our growing mastery of genetic science. But there will be o
admin
2011-01-10
82
问题
Gene therapy and gene based drugs are two ways we could benefit from our growing mastery of genetic science. But there will be others as well. Here is one of the remarkable therapies on the cutting edge of genetic research that could make their way into mainstream medicine in the coming years.
While it’s true that just about every cell in the body has the instructions to make a complete human, most of those instructions are inactivated, and with good reason: the last thing you want for your brain cells is to start churning out stomach acid or your nose to mm into a kidney. The only time cells truly have the potential to turn into any and all body parts is very early in a pregnancy, when so called stem cells haven’t begun to specialize.
Yet this untapped potential could be a terrific boon to medicine. Most diseases involve the death of healthy cells—brain cells in Alzheimer’s, cardiac cells in heart disease, pancreatic cells in diabetes, to name a few; if doctors could isolate stem cells, then direct their growth, they might be able to furnish patients with healthy replacement tissue.
It was incredibly difficult, but last fall scientists at the University of Wisconsin managed to isolate stem cells and get them to grow into neural, gut, muscle and bone cells. The process still can’t be controlled, and may have unforeseen limitations; but if efforts to understand and master stem cell development prove successful, doctors will have a therapeutic tool of incredible power.
The same applies to cloning, which is really just the other side of the coin; true cloning, as first shown with the sheep Dolly two years ago, involves taking a developed cell and reactivating the genome within, resetting its developmental instructions to a pristine state. Once that happens, the rejuvenated cell can develop into a full fledged animal, genetically identical to its parent.
For agriculture, in which purely physical characteristics like milk production in a cow or low fat in a hog have real market value, biological carbon copies could become routine within a few years. This past year scientists have done for mice and cows what Ian Wilmut did for Dolly, and other creatures are bound to join the cloned menagerie in the coming year.
Human cloning, on the other hand, may be technically feasible but legally and emotionally more difficult. Still, one day it will happen. The ability to reset body cells to a pristine, undeveloped state could give doctors exactly the same advantages they would get from stem cells: the potential to make healthy body tissues of all sorts, and thus to cure disease. That could prove to be a true "miracle cure".
The research at the University of Wisconsin is mentioned to show ______.
选项
A、the isolation of stem cells
B、the effects of gene therapies
C、the advantages of human cloning
D、the limitations of tissue replacements
答案
A
解析
转载请注明原文地址:https://www.kaotiyun.com/show/LncO777K
本试题收录于:
NAETI中级口译笔试题库外语翻译证书(NAETI)分类
0
NAETI中级口译笔试
外语翻译证书(NAETI)
相关试题推荐
Withtheunderstandingofphobiashascomeamagicbagoftreatments:exposuretherapythatcanstompoutalifetimephobiaina
Theroomwassoclutteredwithbooksandpapersthatitwasdifficulttofindthemissingkey.
Inthestore,famousperfumesaredisplayedandguardagainstworksofartinthenearbyLouvreMuseum.
下面你将听到一段关于中国法制建设的讲话。当今是法行天下的时代。国运之兴盛,政治之昌明,社会之稳定,经济之发展,民族之团结,文化之繁荣,人民之安居乐业,都离不开法律之维系和法律之保障。中国也不例外。一个国家采取什么样的治国方略,关系着国家的前途和命
主席先生,女士们、先生们:目前,国际形势正处于深刻变化之中。和平与发展仍然是当今时代的主题,总体和平的国际环境为世界经济发展提供了有利条件;科技进步日新月异并孕育着新的重大突破,前所未有地提高了人类认识、把握宏观和微观世界的能力,展现了新的发展
中美两国建交以来,人民之间的交往不断扩大。两国已缔结了33对友好省州和123对姊妹城市。去年,到中国旅游的美国人多达131万人次。中国赴美探亲、求学、经商的有44万人次。中国有超过18万人曾在美国留学,目前在读的留学生有六万余人。而在中国学习的美国留学生
尊敬的各位嘉宾,女士们,先生们,朋友们:我代表中国政府,对莅临会议的东盟国家领导人和各位嘉宾表示热烈的欢迎!中国与东盟各国政府高度重视发展友好关系和互利合作。自2004年首次举办中国—东盟博览会和商务与投资峰会以来,双方积极推进中国—东盟自由贸易
冷战以后世界上仅有一个超级大国,势力均衡因此也就不存在了。这种状况是否会持续很久呢?答案取决于你是乐观主义者,还是悲观主义者。还取决于强权政治是否会被纳入受全球单一文化观念影响的某种立宪制世界秩序中。不过,在可预见的未来,第三次世界大战似乎不太可
这家公司的注册资金为1500万美元,主要从事各类数码产品的进出口业务。“registeredcapital”注册资本,“specializesindoingsth.”专业从事……。“agreatvarietyof”意思为:各类。
A、Three.B、Four.C、Morethanfour.D、Notmentioned.A
随机试题
三度原位菌群失调的主要原因是()
组织内职权的基本类型有()。
作为路堤建筑的填充料,应具备以下()特性。
采用费用构成要素法编制的计价定额中的利润占税前建安工程费的()。
下列关于负债和所有者权益的说法正确的有()。
国家建设征用土地时,土地管理费的收取标准,一般是在( )等项费用之和的基础提取2%~4%。
期货公司在计算净资本时,有证据表明期货公司未能充分计提资产减值准备的,监管机构可以采取以下()措施。
数据库设计的四个阶段是:需求分析、概念设计、逻辑设计和
TelevisionSinceitsinventionin【1】______,【1】______televisionhasplayedanincreasinglyimportantr
Keepinghealthyrequiresaconsciouseffort.Youmakechoicesaboutthefoodsyoueat,just【C1】______youmakechoicesaboutgett
最新回复
(
0
)