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Ricin - Wikipedia
CDC | Facts About Ricin
Ricin poisoning - Mayo Clinic
Ricin | Symptoms, Treatment & Prevention | Britannica
CDC | Questions and Answers About Ricin
Ricin Poisoning: Causes, Symptoms, Next Steps - Healthline
Ricin Toxicity - StatPearls - NCBI Bookshelf
Ricin: An Ancient Story for a Timeless Plant Toxin - PMC
CDC Ricin | Clinical Description
The quick facts about ricin | Nature