FAP, June 16, a scientific research team jointly formed by the University of Cambridge in the United Kingdom and the California Institute of Technology in the United States has released major experimental results. They have created the world's first synthetic human embryonic structure by reprogramming embryonic stem cells. The structure of the embryo is still in the earliest stage of human development and does not grow a heart and brain, the Guardian reported on the 14th. The scientists in charge of the study say the results are expected to provide a key breakthrough for studying the effects of genetic diseases and the causes of recurrent miscarriages. However, the experiment raises serious moral and legal questions. Some researchers say that unlike IVF with a mature legal regulatory system, there is a lack of clear supervision over the direct cultivation of human embryos with stem cells, bypassing sperm and eggs, and such research urgently needs to be followed by a regulatory system. At present, the structure of synthetic human embryo is limited to test tube study, and whether it can continue to develop and grow remains to be seen.