1. Ricin is a deadly toxin derived from the seeds of the castor bean plant . 2. Ricin is derived from the castor bean plant and is relatively easy to make. 3. It is derived from the castor bean plant , which is grown around the world. 4. Ricin is derived from the castor bean plant and is one of the world's deadliest toxins. 5. Early last summer, at an herb festival in Maryland, I stumbled on a four-inch castor bean plant . 6. Ricin, a powder produced from the seeds and pods of the castor bean plant , kills by inhalation or ingestion. 7. Ricin ( pronounced RICE-in ) is derived from the castor bean plant , which is grown around the world. 8. At one of their apartments, police discovered traces of ricin, a lethal product of the widely cultivated castor bean plant . 9. Ricin, which is derived from the castor bean plant , can kill within days . There is no antidote or treatment. 10. Ricin is derived from the castor bean plant , is relatively easy to make and can be deadly in very small doses.