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
25
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] The expression "the biggest wild card" (Last sentence, Para. 3) most probably means ______ .
选项
A、the most unpredictable factor
B、the most wealthy organization
C、the most uncontrollable one
D、the least earnest one
答案
A
解析
整句话是这样的:研究机构、生育诊所还有它们中最不可预知想法的机构——国会——还在思考研究这一决定。因此这项报告会带来什么样的影响还不确定。因此答案是A。
转载请注明原文地址:http://tihaiku.com/zcyy/4056821.html
相关试题推荐
Whenwecreditthesuccessfulpeoplewithintelligence,physicalstrengthorgood
Tobeasuccessfulcriminal,onemustbe_____A、empiricalB、emigrantC、elegantD、e
Tobeasuccessfulcriminal,onemustbe_____A、empiricalB、emigrantC、elegantD、
Tobeasuccessfulcriminal,onemustbe________.A、empiricalB、emigrantC、elegan
Amajornewareaofbioethicsistheethicsofhealthpolicyandhealth-resource
Ifacountrywantstodevelopitseconomysuccessfully,therehastobeaclear
Anethicscrisisatoneoftheworld’smostsuccessfulhumanembryonicstem
Restrictionsontheuseofplasticbagshavenotbeensosuccessfulinsome
Hersuccessfuljumpbroughta______cheerfromthecrowd.A、spontaneousB、homoge
Theenergycrisis,whichisbeingfeltaroundtheworld,hasdramatizedhow
随机试题
Therearethreeseparatesourcesofhazard【C1】______totheuseofnuclearre
Languageisnotmerelysomethingthatisspreadoutinspace,asitwas—ase
WhichLowCarbonTechnologyIsNowaReality?A)Withfossilfuels
综合点位排布的规律或设计原则有()。A.点线呼应原则 B.直线排布 C.居
知觉防御,是指个体进行自我保护的一种思想方法倾向,它使人比较容易观察能满足个体需
属肾上腺皮质激素药物的是A.米非司酮 B.醋酸地塞米松 C.炔雌醇 D.黄
串联补偿装置中晶闸管阀应设置()和()。(A)动态均压回路(B)静态均压回路
中性点电容隔直装置机械旁路开关拒动时,检查机械旁路开关控制回路有无异常,若有异常
全国港口2008年7月货运吞吐总量的同比增长率约为:A.11.9%
(2014年真题)在建设项目各阶段的工程造价中,一经批准将作为控制建设项目投资最
最新回复
(
0
)