For the first time, scientists have created embryos that are a mix of human and monkey cells. The embryos, described Thursday in the journal Cell, were created in part to try to find new ways to ...

Chinese scientist He Jiankui wants to end Alzheimer’s and thinks Silicon Valley is conducting a “Nazi eugenic experiment.” ...

Add Yahoo as a preferred source to see more of our stories on Google. Photo collage of rhesus monkeys on top of microscope photography of cells. Researchers in China have successfully cloned the first ...

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Gleaning stem cells from cloned monkey embryos, as a team of Oregon researchers has done, is an impressive step. But it probably won't lead to medical treatments anytime soon. One hurdle is ethical ...

Early human development is a complex, multistep process that’s even more complicated to study in the lab. Models made from stem cells avoid some of the trouble with using real human embryos. In June, ...