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To: one_less who wrote (10783)4/25/2002 5:19:43 PM
From: Lane3  Respond to of 21057
 
Infigen is ready to place bottles of the herd's output on America's breakfast tables...

Not likely any time soon. They're having enough trouble getting people to accept genetically modified corn.



To: one_less who wrote (10783)5/3/2002 8:32:03 AM
From: long-gone  Respond to of 21057
 
Bull Clone Stumps Brazil Scientists Expecting Cow
Mon Apr 29, 8:22 PM ET

SAO PAULO, Brazil (Reuters) - A healthy bull calf born on a ranch in southeast Brazil astonished scientists who were expecting a female cloned from an adult cow.


Although not Brazil's first cloned calf, it may be the first cloned from somatic, or adult, cells. And scientists have yet to explain how they got a bull from ear cells of a cow.

The project's chief veterinarian, Jose Visintin, said on Monday the experiment "either erred in the laboratory or in the field."

"Of my two hypotheses, I hope we erred in the lab, which means we cloned a calf from somatic cells -- a first for Brazil," Visintin told a news conference at the University of Sao Paulo. "He may not be the clone we hoped for but he'd at least be a clone."

Visintin dismissed the possibility of the as-yet unnamed bull calf being from the cells his team took from the ear of an adult cow, which were supposed to be the genetic material used to create cloned embryos in the project.

"Adult cells are already sexually defined. So there is no way I can believe the bull came from the cow's ear," he said.

Visintin said there were also male bovine fetus cells in the laboratory that may have been accidentally used to create the project's embryos.

"In the scientifically less interesting hypothesis, the recipient cow may have been covered by a bull," said Visintin, who added that the cow was isolated from the herd on the farm but may have dallied with a bull without the team knowing it.

A DNA, or genetic identity, test on the calf should reveal later this week which of the two hypotheses is true.

Visintin will compare the DNA of the calf with that of the male fetus cells in the lab, the recipient cow.

The true parentage of the bull calf should predict the sex of the next two cloned calves, due in four and seven months.

"If the male calf shares the DNA of the recipient cow, which it shouldn't unless the bull got to her, then the next two clones should be female from the donor cow's ear cells like we intended," said Visintin.

"If the bull calf is mistakenly from the male bovine fetus cells in the lab, then the next two clones when they are born will be bulls, too, and his identical brothers."
story.news.yahoo.com