Thursday, November 04, 2004

Smoking II

News about nicotine addiction:
Researchers say they have identified brain cell receptors that appear to be responsible for nicotine addiction, a finding of clear importance for smokers who are desperately trying to kick the habit.

The receptors normally are activated by acetylcholine, a molecule that carries signals between nerve cells and has multiple functions in the body. A large number of acetylcholine receptors have been identified, each with subunits adapted for a specific function. Twelve of those receptors also are activated by nicotine.

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