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abrin - Definition:
(Source: MedicineNet)
Abrin: A phytotoxin (plant poison) found in the seeds of a plant called the rosary pea or jequirity pea. These seeds are red with a black spot covering one end. Abrin is similar to ricin, a toxin that is also found in the seeds of a plant (the castor bean plant), although abrin is much more poisonous than ricin. Abrin can be made in the form of a powder, a mist, or a pellet, or it can be dissolved in water. Powdered abrin is yellowish-white in color. Abrin is a stable substance, meaning that it can last for a long time in the environment despite extreme conditions such as very hot or very cold temperatures. The seeds of the rosary pea have been used to make beaded jewelry, which can lead to abrin poisoning if the seeds are swallowed. Abrin is currently of concern as a possible agent of bioterrorism.
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