The artificial embryos were made by coaxing stem cells to spontaneously form tiny ball-shaped structures that include the beginnings of an amniotic sac and the inner cells of the embryo (the part that would become a person’s limbs, head, and the rest of their body) though they lack tissues needed to make a placenta.
However, as similar research races forward in Europe and China it is raising questions about how close scientists really are to synthetically creating viable human embryos in their labs.
…[Researcher Jianping] Fu says only someone “crazy” would try to make a person using a synthetic embryo. However, given the rapid advance of the science, he sees a legal ban as important. “Many scientists are trying to push boundaries, and people are crossing lines. If you let scientists self-regulate, that is how the gene-edited babies happened. I don’t trust self-regulation,” says Fu.
Read full, original post: Meet the “artificial embryos” being called uncanny and spectacular