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United States Department of Agriculture

Agricultural Research Service


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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.


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Last Modified: 8/12/2016
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