[轉錄]CNN今日頭條

[Zyca (swun mitru valy)]

※ [本文轉錄自 Zyca 信箱]

作者: [e-mail]
標題: CNN今日頭條
時間: Sat Jan 15 12:51:37 2000

發信人: [e-mail] (祝蛋糕好夢), 看板: NTUEE
標  題: CNN今日頭條
發信站: 台大電機 Maxwell BBS (Fri Jan 14 08:59:00 2000)
轉信站: SimFarm!bbs.ee.ntu!Maxwell


[CNN今日頭條]
[adopted from www.cnn.com]

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Oregon researchers say they have cloned a monkey by splitting an
early-stage embryo and implanting the pieces into mother animals.

The technique, detailed in Friday's issue of the journal Science,
has so far produced only one living monkey, a bright-eyed rhesus
macaque female named Tetra, now 4 months old.

Professor Gerald Schatten, a researcher at the Oregon Health
Sciences University in Portland who led the research, said four
more animals are on the way.

"This is essentially the method of Brave New World," said
Ronald M. Green, an ethicist at Dartmouth College.
"This opens the prospect of mass identical replication."

Schatten said the team's goal was to produce identical monkeys
that could be used to perfect new therapies for human disease.

--this is how they did it--

1. An egg from a mother and sperm from a father are used to
   create a fertilized egg.

2. After the embryo grows into eight cells, researchers split
   it into four identical embryos, each consisting of just two cells.

3. The four embryos are then implanted into surrogate mothers.
   Schatten said that in effect, a single embryo becomes four
   embryos, all genetically identical.

"It is possible that we will have genetically identical monkeys
born to different mothers," he said.

Schatten says the "embryo splitting" process is similar to what
happens in nature when a mother has twins. "This is just artificial
twinning," he said. The method is commonly used in animals such as
cattle but had never before been used to create a monkey.

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    任何意見，都歡迎討論喔﹗﹗﹗﹗

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