| # | Concept | Culture | Statement | Freq. |
|---|---|---|---|---|
| 1 | trypsin | United States | Used in biological research and as a digestive enzyme in certain products | 1 |
| 2 | tryptophan | United States | Tryptophan is commonly associated with Thanksgiving turkey and its alleged ability to make people feel sleepy after a big meal. | 1 |
| 3 | tryptophan | United States | Associated with causing drowsiness after a Thanksgiving meal | 1 |
| 4 | tryptophan | United States | Associated with sleepiness and found in turkey, often blamed for post-Thanksgiving dinner drowsiness | 1 |