| Clue | Source | Date |
|---|---|---|
| Organic poison released by a microorganism into its surrounding medium, primarily produced by gram-positive bacteria (8) | ||
| Harmful bacterial secretion | New York Times | 07 Jan 2021 |
| Poison secreted by a micro-organism into its surrounding environment | The Times Specialist Sunday | 14 Oct 2018 |
| Poison produced by micro-organism found in surrounding medium | The Telegraph General Knowledge | 25 Sep 2016 |
| Microorganism discharge |