First, scientists successfully transplanted human kidneys into developing pig embryos

More development is needed, but this technology could one day be used to help alleviate the shortage of human organs needed for transplantation. (Image credit: J. Wang et al/Cell Stem Cell 2023.)

Scientists have succeeded in growing a human organ inside another animal for the first time.

In a new study published Thursday (September 7) in the journal Stem cellResearchers inserted human stem cells into genetically modified pig embryos. When transplanted into surrogate pig mothers, the embryos developed early-stage human kidneys within about 28 days.

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