Eggs can survive decades without signs of aging. Now, scientists may know why

The discovery could open up new avenues for treating infertility and provide a blueprint for improving the longevity of other human cells, researchers said.

In a high-stakes evolutionary gambit, female mammals are born with a finite supply of immature eggs. Propagating future generations depends on this reserve of pre-egg cells, or “primordial oocytes,” staying alive and out of the way of harmful, mutation-causing molecules — sometimes for decades — so they can give rise to mature eggs capable of producing healthy offspring.

Such a feat should be impossible.

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