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2008-12-04

Model unravels rules that govern how genes are switched on and off


Model unravels rules that govern how genes are switched on and off from PhysOrg.com

For years, scientists have struggled to decipher the genetic instruction book that details where and when the 20,000 genes in a human cell will be turned on or off. Different genes operate in each cell type at different times, and this careful orchestration is what ultimately distinguishes a brain cell from a liver or skin cell.

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