Graphic explains how ricin, a protein produced by the castor plant that is toxic to humans, can affect the body, how it can enter the body; a letter sent to the office of Sen. Roger Wicker, R-Miss., has preliminarily tested positive for ricin, as has a letter sent to President Obama.
Graphic explains how ricin, a protein produced by the castor plant that is toxic to humans, can affect the body, how it can enter the body; a letter sent to the office of Sen. Roger Wicker, R-Miss., has preliminarily tested positive for ricin, as has a letter sent to President Obama. MCT
Graphic explains how ricin, a protein produced by the castor plant that is toxic to humans, can affect the body, how it can enter the body; a letter sent to the office of Sen. Roger Wicker, R-Miss., has preliminarily tested positive for ricin, as has a letter sent to President Obama. MCT

White House

April 17, 2013 4:22 PM

Suspect arrested in Mississippi in poison letters to Congress, White House

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