<tt id="6hsgl"><pre id="6hsgl"><pre id="6hsgl"></pre></pre></tt>
          <nav id="6hsgl"><th id="6hsgl"></th></nav>
          国产免费网站看v片元遮挡,一亚洲一区二区中文字幕,波多野结衣一区二区免费视频,天天色综网,久久综合给合久久狠狠狠,男人的天堂av一二三区,午夜福利看片在线观看,亚洲中文字幕在线无码一区二区

          Newsmaker

          Nobel Prize given for test tube baby research

          (Agencies)
          Updated: 2010-10-05 07:56
          Large Medium Small

          NEW YORK – The Nobel Prize in medicine went to a man whose work led to the first test tube baby, an achievement that helped bring 4 million infants into the world and raised challenging new questions about human reproduction.

          Nobel Prize given for test tube baby research
          Professor Robert Edwards, the British pioneer of IVF treatment, sits with two of his 'test-tube-babies', Sophie and Jack Emery who celebrate their second birthday in London in this file photo dated Monday July 20, 1998. [Agencies]?

          Robert Edwards of Britain, now an 85-year-old professor emeritus at the University of Cambridge, lived to see the far-reaching ramifications of his hugely controversial early research.

          Related readings:
          Nobel Prize given for test tube baby research Shortage of sperm donors puts parenthood on hold
          Nobel Prize given for test tube baby research Woman, at 60, gives birth to twins
          Nobel Prize given for test tube baby research Test-tube operation telecast sparks disputes

          "Today, Robert Edwards' vision is a reality and brings joy to infertile people all over the world," the Nobel Committee said in Stockholm. It began with the birth on July 25, 1978, of the first test-tube baby, Louise Brown, to a couple who had been trying to conceive for nine years.

          With in vitro fertilization, or IVF, an egg is removed from a woman, mixed with sperm in a laboratory, allowed to divide for four or five days, then implanted in the womb to grow into a baby. Today the odds of a couple having a baby after a single cycle of IVF treatment are about 1 in 5, roughly the same odds as a fertile couple trying to have children naturally.

          Edwards and research partner Patrick Steptoe, who died in 1988, faced opposition to their IVF experiments. Some religious leaders called it morally wrong. Some government officials thought it more important to limit fertility than treat infertility, and some scientists were worried about the safety of embryos.

          "In retrospect, it is amazing that Edwards not only was able to respond to the continued criticism of IVF, but that he also remained so persistent and unperturbed in fulfilling his scientific vision," the Nobel Committee said.

          Society still wrestles with issues that arose from his work, such as:

          ? Is it appropriate to obtain stem cells from embryos — embryos created through IVF? Some people object because the embryos are destroyed to get the cells.

          ? Should women who donate eggs be paid? The Vatican's top bioethics official, Monsignor Ignacio Carrasco de Paula, said Monday that Edwards opened "a new and important chapter in the field of human reproduction." But he also said IVF is responsible for the destruction of embryos and the creation of a "market" in donor eggs.

          ? Should there be an age limit on women using IVF? In 2006, a 67-year-old Spanish woman made headlines when she gave birth after using the technology to conceive twins. The uproar continued when she herself died only two years later.

          Even so, Edwards' research deserves a Nobel, said bioethicist Laurie Zoloth of Northwestern University. "For millions of families, it created the possibility of a truly joyful and extraordinary event."

          William Ledger, head of reproductive medicine at Sheffield University, said, "The only sadness is that Patrick Steptoe has not lived to see this day because it was always a joint team effort."

          The Nobel is not given posthumously. It was not immediately clear why it took so long to honor such groundbreaking research. Initially, there was concern about the health of test-tube babies, "so it was, of course, very, very important that Louise Brown was healthy and that subsequent babies also were healthy," prize committee member Christer Hoog said.

          Despite the absence of Steptoe, committee secretary Goran Hansson said Edwards "deserves a Nobel Prize on his own" because he made the fundamental discoveries that made IVF therapy possible.

          A statement from Bourn Hall in Cambridge, England, the world's first IVF clinic, which was founded by the two researchers, said Edwards was too ill to give interviews.

          "I spoke to his wife, and she was delighted. And she was sure he would be delighted, too," Hansson told reporters in Stockholm after announcing the $1.5 million (10 million kronor) award.

          Lori B. Andrews of the Chicago-Kent College of Law says making embryos in a lab created a host of ethical issues that have never been fully resolved.

          For one thing, clinics routinely fertilize more eggs than are implanted, at least at first. The resulting extra embryos can be frozen for storage, Andrews noted, but couples can change their minds about what they want to do with them.

          These days, she said, a child can have up to five parents: the sperm donor, the egg donor, a surrogate mother who brings the child to term in her womb, and the couple intending to raise the child.

          Some laws say the legal mother is the woman who gives birth, but nowadays "we can no longer depend on biology to determine the mother," Andrews said.

          As for surrogate mothers, "I think there's ethical issues any time we mix human reproduction and cash payments," Zoloth said. "What does it mean to mix human reproduction and a buyer and a seller and a parent and a child in the same discussion?"

          In Bristol, England, Louise Brown, the first IVF success, is now 32. In a statement issued by the Bourn Hall clinic, she said she and her mother are "so glad that one of the pioneers of IVF has been given the recognition he deserves." Brown gave birth in 2007 to a son who was conceived naturally.

          Johanna Nannung is a Stockholm woman who has a personal reason to praise the award. Her daughter, Olivia, was born after she and her husband underwent four years of IVF treatments.

          "It was incredible. Olivia is the most wonderful and fantastic thing that has ever happened to me. In my life I have always seen myself with a family and children. It's worth more than everything," she said.

          The medicine award was the first of the 2010 Nobels to be announced. It will be followed by physics on Tuesday, chemistry on Wednesday, literature on Thursday, the peace prize on Friday and economics on Monday Oct. 11.

          Candidates for the physics prize are hard to predict given the wide latitude of subjects encompassed by the award. But that does not stop experts from guessing, often by looking at winners of other physics honors, like Israel's Wolf Prize. Several Wolf Prize winners have later won the Nobel Prize.

          This year, the Wolf physics award was shared by US professor John F. Clauser, Alain Aspect of France and Anton Zeilinger of Austria for their work in quantum physics.

          The most popular choices in a poll by the American Institute of Physics were Nick Holonyak, Shuji Nakamura and Robert Hall for the development of the LED laser.

          Thomson Reuters, which analyzes high-impact scientific papers to make predictions, singled out US researchers Charles Bennett, Lyman Page and David Spergel for discoveries derived from a NASA spacecraft on the age and composition of the universe.


           

           

          主站蜘蛛池模板: 四虎网址| 亚洲精品麻豆一二三区| 亚洲 国产 制服 丝袜 一区| 高级会所人妻互换94部分| 国产av一区二区不卡| 国产二级一片内射视频插放| 久草热大美女黄色片免费看| 开心婷婷五月激情综合社区| 五月天天天综合精品无码| 国产精品自在线拍国产| 亚洲一区二区三区最新| 亚洲精品无码久久一线| 国产成人免费手机在线观看视频| 四虎成人高清永久免费看| 亚洲国产综合精品 在线 一区| 国产无套无码AⅤ在线观看| 国产成人午夜福利精品| 欧美拍拍视频免费大全| 久久精品国产99国产精品严洲| 无人视频在线观看免费播放影院| 国产精品乱人伦一区二区| 亚洲人成网站观看在线观看| 无码av中文字幕久久专区| A级毛片无码久久精品免费| 久久被窝亚洲精品爽爽爽| A级孕妇高清免费毛片| 欧美激情综合一区二区| 国产亚洲精品AA片在线播放天| 亚洲欧美日韩高清中文| 国产精品入口中文字幕| 91亚洲精品一区二区三区| 国产极品尤物粉嫩在线观看| 国产精品久久久福利| 国产午夜精品福利免费不| 秋霞在线观看秋| 综合色天天久久| gogogo高清免费观看| 亚洲成人网在线观看| www国产亚洲精品久久网站| 曰韩亚洲AV人人夜夜澡人人爽| 国产免费午夜福利757|