Retracted papers needlessly stigmatize and jeopardize solid research in related fields, study finds

It is one of the highest-profile cases of scientific fraud in memory: In 2005, South Korean researcher Woo-Suk Hwang and colleagues made international news by claiming that they had produced embryonic stem cells from a cloned human embryo using nuclear transfer. But within a year, the work had been debunked, soon followed by findings of fraud. South Korea put a moratorium on stem-cell research funding. Some scientists abandoned or reduced their work in the field.

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