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Human-monkey chimaeras grown for up to 20 days – BioEdge

They are essential, but they do pose ethical issues, say researchers

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Researchers in China and the United States have injected human stem cells into primate embryos and grown chimeric embryos for up to 20 days. Despite ethical concerns, the scientists says that the procedure has potential for providing insights into developmental biology and evolution, into disease and transplants, and into drug development.
“As we are unable to conduct certain types of experiments in humans, it is essential that we have better models to more accurately study and understand human…

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