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Nicotine molecule. Molecular model of nicotine, an addictive alkaloid drug found in tobacco. Smoking is a major cause of chronic bronchitis and lung cancer. Atoms are colour-coded carbon (grey), hydrogen (white) and nitrogen (purple).
May 11th, 2013
Viewed 25 Times - Last Visitor from Rochester, MN on 07/15/2014 at 4:02 PM
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