News » WUSA9 - Ricin is Poison & Toxic; Small Amount Can Kill

WUSA9 - Ricin is Poison & Toxic; Small Amount Can Kill

Cathleen Clancy, M.D., associate professor of emergency medicine, was interviewed by WUSA9 on the lethal affects of the poison, ricin. Letters sent to President Barack Obama and Senator Roger Wicker of Mississippi have initially tested positive for ricin.