Scientists have created “synthetic” mouse embryos with growing brains, beating hearts and the precursors for all other organs in place — without using sperm or eggs.
The researchers at Cambridge university and the California Institute of Technology said theirs were the most complete mammalian embryos made so far from stem cells. Details were published in Nature on Thursday.
The team is working to extend its findings to human development — a field in which other labs around the world are already active, although no synthetic human embryos have been created with organs as well developed as their mouse counterparts.
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