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• n  a toxic protein extracted from castor beans; used as a chemical reagent; can be used as a bioweapon
  one milligram of ricin can kill an adult

• Ricin is powerful, but it's a retail, not a wholesale, poison.
• Cops find a suspected al-Qaeda lab in London but only traces of its lethal ricin.
• AFTERMATH: The Capitol Police haz-mat team scrubs up outside a Senate office building after testing for ricin.

• ricin toxin

News & Articles

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• Ricin Is for Poseurs: Real Would-Be Political Assassins Use Death Rays
  Up until now, it's been a big year for ricin. The simply-made poison has been used in a series of attempted domestic terrorist attacks and has been front and center in the media and our collective-fear pysche. But now there's a new weapon of mass destruction in town that makes ricin look like nothing. Enter the death ray.
  June 21, 2013 - National Journal via Yahoo! News
• Ricin suspect to undergo evaluation
  Staff photo by Evan Lewis Ricin letter suspect Shannon Richardson is led to a Titus County patrol car following a hearing Thursday.
  June 21, 2013 - Texarkana Gazette
• Ricin suspect will undergo mental evaluation
  A detention hearing was held Thursday for the New Boston woman accused of mailing ricin laced letters to President Obama.
  June 20, 2013 - KTAL Shreveport