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Human embryo research: how to move towards a 28-day limit

Alejandro De Los Angeles et al. Nature. 2025 Jul.
No abstract available

Keywords: Developmental biology; Ethics; Policy; Research management.

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Conflict of interest statement

The Zernicka-Goetz laboratory developed stem-cell-derived embryo models and the method to culture human embryos until day 14. J.H.H. was granted (through the Yeda–Weizmann Institute of Science) patents relevant to embryo models and ex utero embryogenesis, and is a co-founder and chief scientific adviser of Renewal Bio, which has licensed technologies mentioned above.

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