Abstract
Several mammals — including sheep, mice, cows, goats, pigs, rabbits, cats1, a mule2, a horse3 and a litter of three rats4 — have been cloned by transfer of a nucleus from a somatic cell into an egg cell (oocyte) that has had its nucleus removed. This technology has not so far been successful in dogs because of the difficulty of maturing canine oocytes in vitro. Here we describe the cloning of two Afghan hounds by nuclear transfer from adult skin cells into oocytes that had matured in vivo. Together with detailed sequence information generated by the canine-genome project5,6, the ability to clone dogs by somatic-cell nuclear transfer should help to determine genetic and environmental contributions to the diverse biological and behavioural traits associated with the many different canine breeds7,8.
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Lee, B., Kim, M., Jang, G. et al. Dogs cloned from adult somatic cells. Nature 436, 641 (2005). https://doi.org/10.1038/436641a
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DOI: https://doi.org/10.1038/436641a
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