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Published online 11 January 2006 | Nature | doi:10.1038/news060109-8

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Rise and fall

Why did Hwang fake his data, how did he get away with it, and how was the fraud found out?

In February 2004, an obscure laboratory in South Korea dropped a bomb on the scientific community: it had cloned a human embryo and extracted stem cells from it.

What followed over the next two years makes for an extraordinary tale of delusion and deception.

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