recin

What is Ricin? [DEFINITION]
What is Ricin? [DEFINITION]
What is Ricin? [DEFINITION]
Ricin is in the news this week because the Secret Service says that a letter containing the substance and addressed to President Obama was received on Tuesday at a White House mail facility. Two more letters sent to Sen. Wicker and Senator Joe Manchin (D.-W.V.), has been found to contain ricin.