It’s time to relax the rules on growing human embryos in the lab

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Researchers can only study human embryos up to 14 days past fertilisation, but new techniques can go beyond that – a change in the law would benefit all of us

Labs - New ScientistWHEN it comes to studying our earliest existence, how far are we willing to go? Growing human embryos in the lab beyond the seventh day after fertilisation – the moment when embryos normally implant in the wall of the uterus – has been a long-standing challenge for biologists, but the latest research is allowing us to extend past that.

Earlier this year, a team led by…

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