All Things Considered, September 5, 2007 · British regulators decided Wednesday to allow, at least in principle, the creation of hybrid human-animal embryos for research into degenerative diseases. The move came despite fierce opposition from some church and ethics groups.
Two teams of British scientists had applied to Britain's Human Fertilisation and Embryology Authority (HFEA) for permission to create what are known in Britain as cytoplastic hybrids, or cybrids, in order to overcome a shortage of donated human eggs.
The process involves injecting human DNA into an animal egg cell from which the nucleus has been removed.
Researchers hope to use the hybrid embryos, which must be destroyed after 14 days, which would create stem cells. The stem cells could be used to help find new medical treatments for diseases such as Alzheimer's, Lou Gehrig's, and Parkinson's.
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Scientists have said they understand that the idea of the process — which would create a hybrid embryo that is 99.9 percent human and 0.1 percent animal — might be shocking to some people. But Dr. Stephen Minger of Kings College London says the public should not be alarmed.