Researchers led by a University of Missouri-Columbia professor of reproductive biotechnology have reported success in freezing and preserving swine embryos that were created by in vitro techniques and that carried modified genetic material. After thawing and transfer to a surrogate mother, some of the embryos went on to produce live piglets with new genetic traits.
In a paper posted today (May 3, 2006) on the Web site of Biology of Reproduction--Papers in Press, a team headed by Dr. Randall Prather, co-director of the National Swine Resource and Research Center, note that their technique could prove valuable in allowing genetically enhanced swine to be transported as embryos across the country and throughout the world.
Because many embryos are needed to produce a successful pregnancy in surrogate female pigs, this new procedure will enable workers to collect an adequate number of altered embryos and store them until they can be transplanted to a surrogate.
Jennifer Faddis | EurekAlert!
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