首页
登录
职称英语
An ethics crisis at one of the world’s most successful human embryonic stem
An ethics crisis at one of the world’s most successful human embryonic stem
游客
2025-04-28
37
管理
问题
An ethics crisis at one of the world’s most successful human embryonic stem cell laboratories has plunged the controversial field of research into a new swirl of uncertainty. The accusations surrounding Korean cloning expert Woo Suk Hwang of Seoul National University--the first scientist to grow stem cells inside cloned human embryos--has already killed a spate of planned studies that sought to prove the cells’ medical potential. The claims that Hwang may have obtained human eggs for his studies from women who felt pressured to donate are also reigniting a long-smoldering debate in the United States over the ethics of paying young women for their eggs, which are difficult to obtain but essential to the production of stem cells tailored to individuals.
Egg donation, which is generally safe but occasionally leads to serious and even life-threatening complications, has been a wedge issue in the stem cell debates, linking feminists and other liberal thinkers to conservatives who favor tighter limits on stem cell research. "We’re in danger of making women into guinea pigs for this research even before there are any treatments to be tested," said Marcy Darnovsky, associate director of the Center for Genetics and Society in Oakland, Calif. "We really need clear rules that someone is enforcing."
With current techniques, it takes dozens of eggs to make a single cloned human embryo, which is destroyed in the process of extracting the stem cells. That means that if the field of therapeutic cloning is to advance--a field involving the creation of cloned embryos as sources of stem cells that would be genetically matched to particular patients--a significant number of eggs will be needed both to fuel the initial research and eventually to satisfy the demands of patients. Scientists at Advanced Cell Technology of Worcester, Mass. , made the decision to pay women only after a long analysis by an ethics board created by the company, said scientific director Robert Lanza. He still thinks it is the right way to go, Lanza said, given the painful injections involved, the uncomfortable egg suction procedure, and the approximately 5 percent chance of a serious case of hormonal over-stimulation, which can require hospitalization. Others say such payments cannot help but be coercive, especially for poor women who might feel compelled to take on those risks just to make ends meet. In April, the National Academies, chartered by Congress to advise the nation on matters of science, released a report that recommended against payments for human eggs beyond expenses incurred by the donors, in part because of the "sensitivities" inherent in the creation of embryos destined for destruction. But the report’s impact remains uncertain as research institutions, fertility clinics and the biggest wild card of them all--Congress--mull the Academies’ findings. [br] What can we learn about the egg donation?
选项
A、It will leave a life-threatening disease to unhealthy donors.
B、It is extremely important to the creation of human embryo.
C、It will make the donors feel ashamed when they donate eggs.
D、Its importance to the stem cell research lies on its rareness.
答案
B
解析
文章第2段介绍了一些关于egg donation的知识,在文章的其他部分也简单提到了一些。D卵细胞的捐献对干细胞的研究很重要的原因是因为它很稀少。卵细胞是培育人体胚胎的必要物质,没有卵细胞就不可能有人体胚胎。它的重要性是在这,而不是因为它很稀少。因此这道题的答案是B。
转载请注明原文地址:http://tihaiku.com/zcyy/4056819.html
相关试题推荐
Tobeasuccessfulcriminal,onemustbe_____A、empiricalB、emigrantC、elegantD、
Tobeasuccessfulcriminal,onemustbe________.A、empiricalB、emigrantC、elegan
Ifacountrywantstodevelopitseconomysuccessfully,therehastobeaclear
TheymaybeoneofBritain’smostsuccessfulexportsandamongtheworld’sm
TheymaybeoneofBritain’smostsuccessfulexportsandamongtheworld’sm
TheymaybeoneofBritain’smostsuccessfulexportsandamongtheworld’sm
Anethicscrisisatoneoftheworld’smostsuccessfulhumanembryonicstem
Anethicscrisisatoneoftheworld’smostsuccessfulhumanembryonicstem
Anethicscrisisatoneoftheworld’smostsuccessfulhumanembryonicstem
Theenergycrisis,whichisbeingfeltaroundtheworld,hasdramatizedhow
随机试题
某女,35岁,初产妇,因第二产程延长行会阴后一斜切开及产钳术助产。产后检查:宫底
关于股份和股票的以下表述,不正确的是: A.股票可以流通并可以设置质押 B.
A.急性淋巴细胞白血病 B.红白血病 C.缺铁性贫血 D.毛细胞性白血病
肝叶切除病人的术后护理错误的是A:应专人护理 B:吸氧3~5天 C:术后取平
“课程”一词在我国始见于清朝。()
A.西格列汀 B.二甲双胍 C.格列本脲 D.胰岛素 E.氯磺丙脲一般反
生命质量评价这一术语最早出现于哪个领域?( )A.医学 B.社会学 C.心
涂饰工程不包括( )涂饰工程。A.水性涂料 B.溶剂型涂料 C.美术 D
A.空腹静脉血糖 B.空腹指尖血血糖 C.糖基化血红蛋白 D.葡萄糖耐量试
从事建筑工程活动的人员,要通过国家任职资格考试、考核,由()注册并办理资格证书。
最新回复
(
0
)