We've Found the Molecule That Causes Itchiness

Researchers have discovered the molecular link between the cells in skin that sense itching and the nerve cells that relay the perception of that itch to the brain. Take that molecule away, and the itchy sensation vanishes. So far, the molecules, cells and circuitry in question have been identified in mice, but this… » 5/23/13 11:03am 5/23/13 11:03am