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Published online 11 March 2004 | Nature | doi:10.1038/news040308-6

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Ovaries may lay new eggs

Possible stem cells in ovaries prompt fertility boosting ideas.

Scientists have found hints that mammals' ovaries produce new eggs throughout life, a finding that might herald new treatments for infertility and the menopause.

The discovery challenges a decades-old dogma that women and other mammals are born with a limited supply of immature eggs.

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