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Background on Ricin Ricin is a poison that can be made from the waste (mash) left over from processing castor beans.
Abrus, Ricinus and pokeweed at Cornell University poisonous plants page. abrin, ricin and pokeweed poisoning.
Two years later - in early 1997 - UNSCOM discovered evidence that Iraq had produced ricin.
How you could be exposed to ricin It would take a deliberate act to make ricin and use it to poison people.
They were alleged to have been involved in a plot to spread ricin, a deadly toxin.