'Poison Ivy Toxin, Urushiol'

'Poison Ivy Toxin, Urushiol'

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Credit: KENNETH EWARD/SCIENCE PHOTO LIBRARY

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Caption: Urushiols are a group of chemically-related toxins, called catechols, produced by a variety of poisonous plants. They all provoke a strong immune response in allergic individuals. Pictured is the urushiol pentadecylcatechol, one of several types produced by poison ivy. The image is a digital computer model based on real molecules. Magnification: 20 million times at 5''x7'' printed size.

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Keywords: catechol, computer model, digital model, molecule models, pentadecylcatechol, poison ivy, poison ivy toxin, urushiol

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