Wednesday, February 24, 2021

Dolly sheep was introduced to the world 24 years ago. It was the first cloned mammal – Executive Digest


Twenty-four years ago, biologists Keith Campbell and Ian Wilmut first introduced the world to the Dolly sheep, the first mammal ever cloned from an adult cell. At the time, in 1997, it was an unprecedented scientific experiment.

Dolly had not been born from an egg with a sperm, she had been created from a mammary gland cell of another Finn Dorset sheep that was no longer alive.

The team of British scientists kept the discovery quiet for several months, while waiting for their article to be published in the scientific journal Nature. Confidential press releases were also sent to journalists so that they would not spread the news before February 27.

However, on the night of the 22nd of that month, a journalist from The Observer he decided he would release the story the next day, so the scientists hurried to tell the story first hand. At the Roslin Institute, the two researchers showed that it was possible to clone mammals.

Dolly the sheep was born on July 5, 1996 by the team of Wilmut and Campbell of the Roslin Institute, University of Edinburgh, and by the Scottish biotechnology company PPL Therapeutics. Dolly had three mothers: one who supplied the cell’s DNA, the second who supplied the egg and the third who carried the cloned embryo to the end.

Dolly’s birth was considered one of the most important scientific advances of the decade. The name was assigned as a reference to the American singer Dolly Parton.





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