INDIGO MOLECULAR IMAGES / SCIENCE PHOTO LIBRARY INDIGO MOLECULAR IMAGES / SCIENCE PHOTO LIBRARY
Nicotine molecule. Computer artwork showing the molecular structure of the alkaloid nicotine. Nicotine is the main addictive stimulant in tobacco smoking. It is found in the nightshade family of plants (Solanaceae). Atoms are represented as spheres: carbon (black), hydrogen (white), nitrogen (blue), and bonds between the atoms by cylinders.
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