A letter mailed to President Barack Obama on Tuesday tested positive for the deadly poison ricin, the NY Post reports. On Monday a letter was mailed to the office of a Mississippi senator that also tested positive for ricin.
Ricin has been used in assassinations in the past. A tiny amount, the equivalent of a few grains of salt, can kill a man.
Letters containing deadly anthrax spores were sent to politicians and the media after the September 11 attacks. But Sen. Richard Blumenthal told the NY Post there was “no apparent link” between the letters and Monday’s bombings in Boston.
Ricin is poisonous if inhaled. It kills by binding to proteins and preventing protein synthesis in humans. Proteins are vital to the human body. Proteins carry out thousands of chemical reactions within cells that help us to move around, digest food, and protects us from virus and bacteria. Without proteins, death occurs within 3-5 days.
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