Older Ovaries, Not Older Eggs, May Reduce Fertility With Aging

Women who are over 40 have a notoriously hard time getting pregnant by in-vitro fertilization (IVF), and it’s long been assumed that their problem stems from “old eggs”. But a preprint now available online at the Journal of Endocrinology suggests that the real problem might be the aging of the cells that surround the…

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Scientists Make Mice Eggs Out of Stem Cells; Could Someday Make Babies Out of Your Dead Relatives

Scientists in Japan have produced a litter of healthy baby mice from eggs created entirely in a laboratory. The same team reportedly fabricated mouse sperm a year ago, but they say that that was no big. It's the fragile, fickle lady eggs that are the real challenge. And now they've done it! From scratch! Woooooooo!