The research raises critical legal and ethical questions, and many countries, including the US, don’t have laws governing the creation or treatment of synthetic embryos. “Unlike human embryos arising from in vitro fertilization (IVF), where there is an established legal framework, there are currently no clear regulations governing stem cell derived models of human embryos. “I just wish to stress that they are not human embryos,” Zernicka-Goetz said. Right now, the synthetic model human embryos are confined to test tubes. “There is much work to be done to determine the similarities and differences between synthetic embryos and embryos that form from the union of an egg and a sperm.”

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Persons: CNN —, ” James Briscoe, Francis Crick, Dr, Magdalena Zernicka, Goetz, Zernicka, ”, ” Zernicka, “, haven’t, Sanjay Gupta, ” Roger Sturmey Organizations: CNN, Francis, Francis Crick Institute, International Society for, CalTech, University of Cambridge, The Guardian, CNN Health, University of Manchester Locations: United States, United Kingdom, Boston, Israel