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Recalibrating the Biological Clock?
Catherine McDiarmid-Watt |
Friday, April 17, 2009 |
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A new study challenges the long-held belief that female mammals start life with a limited number of eggs and cannot produce new ones after birth. For the first time, a Chinese group has found mouse cells that produce new eggs when transplanted into sterilized mice and give rise to normal offspring. The findings are already inflaming the debate over when and how female mammals generate eggs; if confirmed, they could offer hope of new options to treat human infertility.
Read more: http://sciencenow.sciencemag.org/cgi/content/full/2009/413/1?rss=1
Category:
Fertility,
infertility,
Old Eggs,
ovaries,
Too Old
About Catherine: I am mom to three grown sons, two grandchildren and two rescue dogs. After years of raising my boys as a single mom, I remarried a wonderful man who had never had a child of his own. Unexpectedly, I found myself pregnant at 49!
Sadly we lost that precious baby at 8 weeks, and decided to try again. Five more losses, turned down for donor egg, foster care and adoption due to my age and losses - we have accepted that there will be no more babies in our house.
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A new study challenges the long-held belief that female mammals start life with a limited number of eggs and cannot produce new ones after birth. For the first time, a Chinese group has found mouse cells that produce new eggs when transplanted into sterilized mice and give rise to normal offspring. The findings are already inflaming the debate over when and how female mammals generate eggs; if confirmed, they could offer hope of new options to treat human infertility.
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