CDC: Case Definition: Ricin or Abrin Inhalation
CDC: Case Definition: Ricin or Abrin Ingestion
CDC: Toxic Syndrome Description: Ricin or Abrin Poisoning
MMWR: Investigation of a Ricin-Containing Envelope at a Postal Facility—South Carolina, 2003
CDC Webcast: Recognition, Management and Surveillance of Ricin-Associated Illness
CDC: Laboratory Response to Suspicious Substances
CDC: Laboratory Testing for Ricin in Environmental Samples
CDC: Chemical Terrorism Event Specimen Collection
CDC: Shipping Instructions for Samples Collected From People Potentially Exposed to Chemical Terrorism Agents