These 5 biomedical advances gave 2022 a sci-fi feel

COVID-19 may continue to dominate headlines, but this year’s biomedical advances weren’t all about “the Rona.” 2022 saw fruitful and seemingly fantastical research that could one day mean good news for patients.

Growing synthetic embryos

Two reports this year revealed how to fabricate the early stages of mammalian life. With a bit of laboratory wizardry, scientists mingled mouse stem cells, which self-assembled to spawn what appears to be a kind of fledgling embryo — no egg or sperm required. As they grow, these stem cell–derived synthetic embryos can form proto hearts, brains and guts. But the similarity to natural mouse embryos fades quickly. The synthetic and natural versions match

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