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[–] derram ago 

https://archive.fo/QTXGK :

Hybrid Human–Chicken Embryos Illuminate Key Developmental Milestone - Scientific American

'They did so by developing a technique that sidesteps restrictions on research with human embryos by grafting human cells onto chicken embryos. '

'The method, published on 23 May in Nature1, could supplant the use of human embryos in some laboratory experiments. '

'For the first time, researchers have watched human ‘organizer’ cells direct the formation of an embryo’s top, bottom, front and back. '

'In 2016, Brivanlou’s group was the first to grow human embryos in a dish to the 14-day mark3. '

'Tests revealed that the embryo-like structures included a cluster of cells that expressed genes seen in other species’ organizer cells. '


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