They Were Made Without Eggs or Sperm. Are They Human?
And because scientists don’t have a great idea of what a nine-day-old embryo looks like inside the body, Greely said, they ...
BBC1 年
Scientists grow whole model of human embryo, without sperm or egg
The Weizmann Institute team say their "embryo model", made using stem cells, looks like a textbook example of a real 14-day-old embryo. It even released hormones that turned a pregnancy test ...