A team of Israeli researchers have worked on the first "complete" embryo model in an non-traditional manner which means sperms, egg or a womb. Instead of sperms and egg the scientists used stem cells that were reprogrammed.
"These synthetic embryo models had all the structures and compartments characteristic of this stage, including the placenta, yolk sac, chorionic sac and other external tissues that ensure the models’ dynamic and adequate growth," the researchers have said.
