For the first time ever, scientists have succeeded in growing human eggs from the earliest stages to full maturity in a laboratory. Before now, scientists had only succeeded in doing so with the eggs of mice, maturing those eggs to the stage where they produced living babies. They had also grown human eggs from a later stage of development. Scientists at two research hospitals in Edinburgh, Scotland and the Center for Human Reproduction in New York completed this latest experiment. They published the results of their research in the journal Molecular Human Reproduction in early February. They said this research could one day help in developing medicines and new treatments for people who are unable to produce children.