Scientists Develop Human Embryo Model Without Sperm Or Eggs

PO1 William "Chip" Nagel
..."heir next goal, Hanna said, is to advance to day 21 and also reach a threshold of a 50% success rate.

Magdalena Żernicka-Goetz, a professor of development and stem cells at the University of Cambridge, said the study joins six other similar human embryo-like models published from teams around the world this year, including from her lab.

"None of these models fully recapitulate natural human development but each adds to ways in which many aspects of human development can now be studied experimentally," she said.

This looks a lot like a human embryo,

The study raises some ethical questions over the possibility of potential future manipulation in human embryo development, Hanna and others noted. He drew a comparison to nuclear physics, however, arguing that you should not stop all research in that field because somebody might choose to make a nuclear bomb.

It is important to engage and fully inform the public, he said, with "nothing done in the shadows"."