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Human cells grown in monkey embryos spark ethical debate – Yahoo News Australia

Scientists confirm they have made “chimera” embryos from long-tailed macaques and humans.

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Monkey embryos containing human cells have been made in a laboratory, a study has confirmed.
The research, by a US-Chinese team, has sparked fresh debate into the ethics of such experiments.
The scientists injected human stem cells – cells that have the ability to develop into many different body tissues – into macaque embryos.
The developing embryos were studied for up to 20 days.
Other so-called mixed-species embryos, or chimeras, have been produced in the past, with human cells implanted into…

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