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An international standard that limits how long human embryos can be grown in a laboratory has been extended under limited conditions, which will remove a barrier to stem cell research.
A researcher who has been met with widespread criticism after claiming to have used CRISPR-Cas9 gene-editing technology to alter the embryonic genes of twin girls born earlier this month in China defended the work on Wednesday.
A researcher who has been met with widespread criticism after claiming to have used CRISPR-Cas9 gene-editing technology to alter the embryonic genes of twin girls born earlier this month in China defended the work on Wednesday.