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Lab-grown monkey embryos reveal in 3D how organs begin

At 25 days old, specimens could be the oldest primate embryos ever grown outside the womb.
  1. Gemma Conroy
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Scientists have cultivated monkey embryos in the laboratory long enough to watch the beginning of organ formation and the development of the nervous system — milestones that are difficult to observe in embryos growing in the uterus. The embryos reached the age of 25 days, making them what might be the oldest primate embryos to be grown outside the womb.

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doi: https://doi.org/10.1038/d41586-023-01544-6

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