| Clue | Source | Date |
|---|---|---|
| Like tests done on living things | Premier Sunday | 04 May 2025 |
| Like experiments conducted using whole living organisms | ||
| Live (as opposted to "test tube") | ||
| Like some lab testing | Universal | 31 Jul 2020 |
| Within a living organism, in biology | Universal | 11 Mar 2017 |
| Describing a living organism process (unlike, say, from a test tube) | Jonesin | 22 Dec 2015 |
| How many experiments are done | New York Times | 24 Oct 2015 |
| How many experiments are done | ||
| Describing a living organism process |