Sunday, January 14, 2007

Cells have a Zip Code

Scientists reported in an article in [the Public Library of Science] that cells have the equivalent of a Zip-code built in to their DNA that codes their location in the body. Skin cell DNA from 47 locations on a subject were compared. Three locations on the DNA were found to correspond to the location of the cell in the body, specifying whether it came from the upper or lower torso, near to or far from the center of the body, and near to or far from the surface of the body.

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