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Small magnitude 3.6 earthquake strikes near Great Falls, Cascade County, Montana, USA
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#319313
Thu 23 Jul 2015 04:52:PM
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Joined: Feb 2001
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Launch Director
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Launch Director
Joined: Feb 2001
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When does aging really begin? Scientists now have a molecular clue. In a study of the roundworm C. elegans, they found that adult cells abruptly begin their downhill slide when an animal reaches reproductive maturity. A genetic switch starts the aging process by turning off cell stress responses that protect the cell by keeping important proteins folded and functional. Germline stem cells throw the switch in early adulthood, after the animal starts to reproduce, ensuring its line will live on.  Source: Simple flip of genetic switch determines aging or longevity in animals
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Simple flip of genetic switch determines aging or longevity in animals
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