Egg producing stem cells found in mice have led to studies on humans to determine if women also produce these cells.

The research looks promising in humans and may offer hope to women struggling with infertility due to illness or age.

It was once thought that women are born with all of the eggs that they will ever produce but that theory is changing.

More studies need to be done to confirm stem cell findings and the implications that may derive from the discovery.

“Our current views of ovarian aging are incomplete. There’s much more to the story than simply the trickling away of a fixed pool of eggs,” said lead researcher Jonathan Tilly of Harvard’s Massachusetts General Hospital, who has long hunted these cells in a series of controversial studies.