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Published online 20 October 2004 | Nature | doi:10.1038/news041018-10
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Egg injection boosts fertility
New mitochondria may pep up ageing eggs, without creating 'three-parent' babies.
Injecting a woman's eggs with fresh supplies of power-generating mitochondria from the egg of another woman is known to boost the success rate of in vitro fertilization (IVF). But there's a serious ethical hitch: any resulting embryos contain genetic material from three different people.
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