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With RNA interference, gene silencing roars into labs

9:54am, June 28, 2005

Although you don't hear a thing, there is a raucous party going on inside each one of your cells. Each minute of every day, molecules are murmuring information from one to the next in an ancient version of the game of telephone.

DNA, the genetic party host, starts each round by whispering a message to its chemical cousin RNA. Keeping the game going, RNA passes this communication to the ribosomes, the cell's amino acid–linking machines. They, in turn, spit out a

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