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Three-person embryos are intended to help mothers with mitochondrial disease from passing it on to their children, but a new study indicates that some faulty mitochondria might occasionally make it through the mitochondrial replacement therapy process, Nature News reports.

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Jay Shendure and his colleagues have developed a new method to more comprehensively identify human cell types, the NY Times reports.

Researchers in the UK and Japan have shown that infertility in mice with three sex chromosomes can be overcome, according to the Guardian.

China is embracing preimplantation genetic diagnosis, Nature News reports. 

In PLOS this week: host genetic factors associated with cervical neoplasia progression, population patterns for an ancient flowering rainforest plant, and more.