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
78
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".
Towards the genetic research, the author’s attitude can best be said to be that of ______.
选项
A、frustration
B、indifference
C、amazement
D、opposition
答案
C
解析
转载请注明原文地址:https://kaotiyun.com/show/hncO777K
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
Insomecountries,______iscalled"equality"doesnotreallymeanequalrightsforallpeople.
The______discoveryofdinosaurs’completegenesshockedtheworldandwasreceivedwithdisbelief.
Modernindustrialsocietygrantslittlestatustooldpeople.Infact,suchasocietyhasasystemofbuilt-inobsolescence.The
WhenHenryarrivedhomeafteraharddayatwork,hiswifewasslept.
Short-termmemoryisthemechanismwherewithoneremembersatelephonenumberonehaslookedupjustlongenoughtodialit;as
Californiahasmorelightthanitknows________todowith,buteverythingelseisexpensive.
Whatactually________agoodangle—oragoodselfoverall—isrootedinwhatweconsiderbeautiful.
中国与东盟国家,山水相连,唇齿相依。引以为豪的是,我们拥有上千年的传统友谊和贸易往来的悠久历史。令人欣喜的是,我们今天相互首选对方,组建经济共同体——中国—东盟自由贸易区。中国与东盟的经贸关系历史上从来没有像今天这么密切、这么活跃,已步入了黄金时期。而这一
A、Aboutsixty.B、Aboutfifteen.C、Aboutsixteen.D、Aboutfive.A
A、Three.B、Four.C、Morethanfour.D、Notmentioned.A
随机试题
2019年10月31日,党的十九届四中全会审议通过了《中共中央关于坚持和完善中国特色社会主义制度推进国家治理体系和治理能力现代化若干重大问题的决定》。下列有关说法错误的是()。
颈椎病最常见的类型是
A.中心性发绀B.周围性发绀C.混合性发绀D.血管性晕厥E.阿-斯综合征肺水肿患者体循环毛细血管中还原血红蛋白增多可出现
依据《水污染防治法》,禁止向水体排放的是()。
因承包商变更建议造成合同价值减少,应决定一笔费用加入合同价格,这笔费用应按如下确定()。
根据《建设工程安全生产管理条例》,关于专职安全生产人员责任的说法,正确的是()。
关于政府补助的确认与计量,下列说法中正确的有()。
Mostchildrenwithhealthyappetitesarereadytoeatalmostanythingthatisofferedthemandachildrarelydislikesfood【31】i
建设有中国特色社会主义首要的基本理论问题是
Youmayhavenoticedthatthevoicesofpoliticiansseemtochangeastheyriseuptheranks.Nowscientists【B1】______thatbeing
最新回复
(
0
)