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United States Department of Agriculture

Agricultural Research Service

ARS Photo Library

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Image Number K9198-1

Castor bean (Ricinus communis). Originally from East Africa, the castor oil plant is now found in warm regions worldwide. Castor bean oil has been used in medicine, printing, dyeing, and machine lubrication. But the bean also produces a substance—ricin—which is a deadly toxin.

 

Photo by Brian Prechtel.


640 pixels wide: (k9198-1.jpg)




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Last Modified: 10/2/2008
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