| # | Concept | Culture | Statement | Freq. |
|---|---|---|---|---|
| 1 | ricin | US | Ricin is known as a deadly toxin and is a major concern for biosecurity and law enforcement. | 1 |
| 2 | ricin | United States | Ricin is a highly toxic poison, considered a serious threat and is regulated as a controlled substance. | 1 |
| 3 | ricin | United States | Ricin is known as a deadly poison and is seen as a serious public safety threat. | 1 |