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- Ricin - WikipediaRicin (/ ˈ r aɪ s ɪ n / RY-sin) is a lectin (a carbohydrate-binding protein) and a highly potent toxin produced in the seeds of the castor oil plant, Ricinus communis.The median lethal dose (LD 50) of ricin for mice is around 22 micrograms per kilogram of body weight via intraperitoneal injection. Oral exposure to ricin is far less toxic. An estimated lethal oral dose in humans is ...
- WTOP | Washington’s Top News | DC, MD & VA News, Traffic & WeatherWTOP delivers the latest news, traffic and weather information to the Washington, D.C. region. See today’s top stories.
- List of incidents involving ricin - WikipediaIn 2003, a package and letter sealed in a "ricin-contaminated" envelope was intercepted in Greenville, South Carolina, at a United States Postal Service processing center.. Ricin was detected in the mail at the White House in Washington, D.C. in November 2003. The letter containing it was intercepted at a mail handling facility off the grounds of the White House, and it never reached its ...
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