Japanese scientists said Wednesday they had successfully used mouse stem cells to grow kidneys in rat embryos, using a technique that could one day help grow human kidneys for transplant

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James Priest couldn’t make sense of it. He was examining the DNA of a desperately ill baby, searching for a genetic mutation that threatened to stop her heart. But the results looked as if they had come from two different infants

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We Are Multitudes

January 11, 2018

Women are chimeras, with genetic material from both their parents and children. Where does that leave individual identity?

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Julian Savulescu writes, “Scientists in the United States are creating so-called “human-pig chimeras” which will be capable of growing the much-needed organs. These chimeras are animals that combine human and pig characteristics. They are like mules that will provide organs that can be transplanted into humans.”

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Chimaeras are both monsters of the ancient imagination and a long-established research tool. Recent advances, particularly those dealing with the identification and generation of various kinds of stem cells, have broadened the repertoire and utility of mammalian interspecies chimaeras and carved out new paths towards understanding fundamental biology as well as potential clinical applications

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