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Beating Hurdles, Scientists Clone a Dog for a First
By [GINA KOLATA](The New York Times - Search KOLATA&fdq=19960101&td=sysdate&sort=newest&ac=GINA KOLATA&inline=nyt-per)
South Korean researchers are reporting today that they have cloned what scientists deem the most difficult animal, the dog.
The group worked for nearly three years, seven days a week, 365 days a year and used 1,095 eggs from 122 dogs before finally succeeding with the birth of a cloned male Afghan hound. The surrogate mother was a yellow Labrador retriever.
Dogs have such an unusual reproductive biology, far more so than humans, scientists say, that the methods that allowed cloning of sheep, mice, cows, goats, pigs, rabbits, cats, a mule, a horse and three rats, and creation of cloned human embryos for stem cells, simply do not work with them.
Woo Suk Hwang, the principal author of the dog cloning paper, being published in the journal Nature, wrote that the puppy, an identical twin of the adult Afghan but born years later, was delivered by Caesarean section on April 24. The pregnancy lasted a normal 60 days and the newborn pup weighed 1 pound 3.4 ounces and was named Snuppy.
Not Snoopy. The scientists named him for Seoul National University puppy.
Cloning researchers were awed at the achievement, but not everyone shared their admiration.
Nigel Cameron, a bioethicist at Chicago-Kent College of Law and director of its Institute on Biotechnology and the Human Future, noted some people see dogs as members of the family. “There’s sort of a dry run here for the human cloning debate,” he said. “What we do with dogs we may well end up doing with our kids.”
Whole Article:
nytimes.com/2005/08/04/science/04clone.html?ei=5065&en=f3d32086ad16d7ec&ex=1123732800%02%22ner=MYWAY&pagewanted=print
By [GINA KOLATA](The New York Times - Search KOLATA&fdq=19960101&td=sysdate&sort=newest&ac=GINA KOLATA&inline=nyt-per)
South Korean researchers are reporting today that they have cloned what scientists deem the most difficult animal, the dog.
The group worked for nearly three years, seven days a week, 365 days a year and used 1,095 eggs from 122 dogs before finally succeeding with the birth of a cloned male Afghan hound. The surrogate mother was a yellow Labrador retriever.
Dogs have such an unusual reproductive biology, far more so than humans, scientists say, that the methods that allowed cloning of sheep, mice, cows, goats, pigs, rabbits, cats, a mule, a horse and three rats, and creation of cloned human embryos for stem cells, simply do not work with them.
Woo Suk Hwang, the principal author of the dog cloning paper, being published in the journal Nature, wrote that the puppy, an identical twin of the adult Afghan but born years later, was delivered by Caesarean section on April 24. The pregnancy lasted a normal 60 days and the newborn pup weighed 1 pound 3.4 ounces and was named Snuppy.
Not Snoopy. The scientists named him for Seoul National University puppy.
Cloning researchers were awed at the achievement, but not everyone shared their admiration.
Nigel Cameron, a bioethicist at Chicago-Kent College of Law and director of its Institute on Biotechnology and the Human Future, noted some people see dogs as members of the family. “There’s sort of a dry run here for the human cloning debate,” he said. “What we do with dogs we may well end up doing with our kids.”
Whole Article:
nytimes.com/2005/08/04/science/04clone.html?ei=5065&en=f3d32086ad16d7ec&ex=1123732800%02%22ner=MYWAY&pagewanted=print