Steen Willadsen

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Steen Willadsen

Born 1944
Copenhagen, Denmark
Residence Orlando, United States of America
Fields embryologist
Alma mater Royal Veterinary College of Copenhagen
Known for The first cloning of a sheep.
Notable awards Recipient of the 2005 Pioneer Award


Steen Malte Willadsen (born 1944 in Copenhagen, Denmark) is a scientist credited with being the first to clone a farm animal using nuclear transfer.[1]

Willadsen attended the Royal Veterinary College of Copenhagen and obtained a degree in reproductive physiology.[2] In 1984, at the British Agricultural Research Council's Unit on Reproductive Physiology and Biochemistry, Willadsen successfully used nuclear transfer to clone a sheep from embryonic cells.[3][4] He has been called an Iconoclastic Genius of Cloning. In a June 3rd 1997 article of the New York Times. [5] He has worked in the field of chimeras: animals half goat and half sheep, half sheep and half cow, etc.[6] While at Cambridge, England, he was the first to clone a mammal from differentiated cells, from sheep embryos, in 1984.

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