is the process where nuclear transplantation of a patient's own cells makes an oocyte from which immune-compatible cells (especially stem cells
) can be derived for transplant. These cells are stimulated to divide and are grown in a Petri dish rather than in the uterus.
1984 - A researcher in Britain claims that he has cloned the first mammal, a lamb that was produced via the nuclear transfer of sheep embryo cells.
2000 - Pigs and a goat are reportedly cloned from adult cells.
Advanced Cell Technology of Worcester, Massachusetts, says it produced a six-cell cloned human embryo,
in research aimed at harvesting stem cells. Separately, five bulls are cloned from a champion show cattle named Full Flush.
2002 - Rabbits and a kitten are reportedly cloned from adult cells.
December 27, 2002 -
Clonaid claims to produce first human clone, a baby girl, Eve. The company declines to provide proof that Eve is a clone or even that she exists.
May 4, 2003 - Scientists at the University of Idaho say they have cloned a mule and name it Idaho Gem. Two additional mules are cloned that same year as part of a joint project between the University of Idaho and Utah State University.
August 6, 2003 - Scientists at the Laboratory of Reproductive Technology in Cremona, Italy, say they have created the world's first cloned horse, Prometea, from an adult cell taken from the horse who gave birth to her.
September 26, 2003 - The journal Science reports that French scientists at the National Institute of Agricultural Research at Joy en Josas, France, have cloned rats for the first time.
August 3, 2005 - South Korean researchers announce they have successfully cloned a dog, an Afghan hound named Snuppy.
Five cloned puppies from Trakr, a German Shepherd Sept.11 Ground Zero
rescue dog, are born.
May 2009 - Clone of Tailor Fit, a two-time quarter horse world champion, is born, one of several cloned horses born that year.
September 2011 - At South Korea's Incheon Airport, seven "super clone" sniffer-dogs are dispatched to detect contraband luggage.
They are all golden Labrador Retrievers that are genetically identical to Chase, who was the top drug detention canine until he retired in 2007.
May 15, 2013 -
Oregon Health & Science University researchers report in the journal Cell that they have successfully reprogrammed human skin cells back to their embryonic state.
April 2014 - For the first time, cloning technologies are used to generate stem cells that are genetically matched to adult patients.
Scientists put the nucleus of an adult skin cell inside an egg and the reconstructed egg went through the initial stages of embryonic development, according to research published in the journal Cell Stem Cell.