男女羞羞视频在线观看,国产精品黄色免费,麻豆91在线视频,美女被羞羞免费软件下载,国产的一级片,亚洲熟色妇,天天操夜夜摸,一区二区三区在线电影
  .contact us |.about us
Home BizChina Newsphoto Cartoon LanguageTips Metrolife DragonKids SMS Edu
news... ...
             Focus on... ...
   

Report of cloned fetus met with skepticism
( 2002-04-07 14:31 ) (7 )

A newspaper report quoting an Italian doctor who said a woman in his human cloning program is pregnant was met with criticism and skepticism Saturday from scientists and ethicists.

The report from the English-language Gulf News of Dubai, United Arab Emirates, said Dr. Severino Antinori made the announcement earlier this week at a cloning conference in Dubai.

In response to a question about his project to clone humans, he was quoted as saying: "Our project is at a very advanced stage. One woman among the thousands of infertile couples in the program is eight weeks pregnant."

Antinori, who heads a fertility clinic in Rome, refused to reveal the identity of the woman, what country she came from, nor the details of the process by which she became pregnant, but he said 5,000 couples took part in the project, according to the report.

The Italian physician raised eyebrows last year when he announced his plans to create the world's first cloned human babies along with Panayiotis Zavos, who runs an infertility clinic in Lexington, Ky. The idea was met with outrage around the world, despite the promised benefits of some avenues of research.

Antinori first gained worldwide notice by helping a 62-year-old woman have a child in 1994.

Spokeswomen for Antinori said he would not comment on the newspaper report, and he did not answer calls to his cell phone. Zavos' office also declined to comment.

OTHERS COMMENT

Dr. Arthur Caplan, director of the Center for Bioethics at the University of Pennsylvania in Philadelphia, is one of many experts skeptical and critical of the report.

"Of all the people who talk about cloning babies, Antintori is the one with the technical abilities to do it," acknowledged Caplan, who is also a Breaking Bioethics columnist for MSNBC.com. "But I am very skeptical," he said, given the animal data that show that only about 30 of every 350 or so tries will produce a pregnancy.

One of the many women in the program "would have dropped a dime and leaked the news" if it was true, Caplan said. "You can't keep something like this a secret."

Antinori has made predictions before regarding human cloning that proved false, he added.

Even if cloning does result in a pregnancy, the animal studies show there is a 97 percent chance of miscarriage or stillbirth, he noted. And of the cloned animals born despite these odds, a great number have had health problems, from abnormal growth to arthritis, Caplan said.

Until the technique is refined, "any attempt at human cloning is completely immoral," he said. "If he does succeed, he is not a hero, but a villain who shows a callous indifference to babies in his desire to be first."

Dr. William Keye, president of the American Society for Reproductive Medicine, which opposes using cloning to make human babies, agreed.

"Despite the assertions of progress made by some self-proclaimed cloning experts, there is no scientific evidence to justify an attempt to clone a human being," he said in a statement from the organization. "We urge the media, the public and policy makers to meet such claims with skepticism rather than alarm, unless they are accompanied by peer-reviewed scientific evidence."

Ronald M. Green, who directs the Ethics Institute at Dartmouth College in Hanover, N.H., also said it's far from certain that an 8-week-old pregnancy would lead to a birth.

DISASTROUS RECORD

"The record in animal cloning has been so disastrous in terms of fetal survival that I would hesitate to think that this pregnancy will necessarily go to term," he said.

Dr. George Daley, a researcher at the Whitehead Institute for Biomedical Research in Cambridge, Mass., said he could not comment on scientific aspects of the report.

"I can only repeat my strong belief that based on what we know about the risks and limitations of animal cloning, the pursuit of reproductive cloning by these individuals is irresponsible and dangerous," he said.

To clone a human, Antinori has said he would insert DNA from a person into an egg stripped of its genetic material. The egg would be stimulated to divide into an embryo for implanting into a woman's uterus.

Antinori's plans prompted the United Nations to set up a panel last year aimed at drafting an international treaty to ban the cloning of human beings.

The treaty drafting process is expected to take years, but this latest announcement is likely to give more urgency to the debate, which began in February.

 
   
 
   

 

         
         
       
        .contact us |.about us
  Copyright By chinadaily.com.cn. All rights reserved  
主站蜘蛛池模板: 高邑县| 和林格尔县| 闻喜县| 瑞丽市| 铁岭市| 新河县| 九龙坡区| 金溪县| 黄大仙区| 平原县| 安泽县| 通江县| 三原县| 龙山县| 易门县| 莒南县| 平山县| 咸丰县| 石林| 泉州市| 普宁市| 会同县| 宾川县| 宜城市| 北碚区| 越西县| 习水县| 青州市| 梨树县| 巴塘县| 绍兴市| 兴安盟| 宜宾市| 海门市| 城步| 锡林郭勒盟| 新疆| 合山市| 宜春市| 盐亭县| 鄂伦春自治旗| 南充市| 太谷县| 杨浦区| 泊头市| 区。| 锦屏县| 黔江区| 嘉义县| 青州市| 云安县| 昌都县| 晋州市| 江源县| 武义县| 赣州市| 呼伦贝尔市| 黎平县| 东安县| 新乡县| 东阳市| 昌平区| 铜梁县| 同江市| 江北区| 凉山| 茌平县| 股票| 六安市| 洛南县| 达州市| 富川| 嘉善县| 寻乌县| 乌审旗| 陇南市| 青河县| 犍为县| 铜山县| 安西县| 云林县| 若尔盖县|