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Nature 437, 1075 (20 October 2005) | doi:10.1038/4371075a; Published online 19 October 2005

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Biologists forced to reassess embryo test

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Screening technique for genetic abnormalities under scrutiny.

A technique for detecting genetic abnormalities in embryos is itself coming under the microscope. Preimplantation genetic diagnosis (PGD) is used in fertility treatment to check the condition of an embryo before it is implanted in a mother's womb.

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