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Definition of Phytotoxin

Phytotoxin: A poison in a plant. Abrin and ricin are examples of phytotoxins. Abrin comes from the seeds of a plant called the rosary pea or jequirity pea and ricin from the seeds of the castor bean plant.

Source: MedTerms™ Medical Dictionary
http://www.medicinenet.com/script/main/art.asp?articlekey=25567
Last Editorial Review: 6/14/2012

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