| Clue | Source | Date |
|---|---|---|
| Basic amino acid | Newsday | 23 Jun 2022 |
| Amino acid | Canadiana | 01 Feb 2021 |
| Something wrong in liquid that fulfils vital biochemical role | ||
| Amino acid that helps treat cold sores | Jonesin | 15 Jan 2019 |
| Basic amino acid | Universal | 07 Oct 2015 |
| Essential amino acid | New York Times | 07 Jun 2015 |
| Basic amino acid | ||
| Essential amino acid | ||
| Essential amino acid | ||
| Essential amino acid | ||
| An amino acid | ||
| Certain amino acid | ||
| Basic amino acid | ||
| Essential amino acid | ||
| Basic amino acid | ||
| An amino acid | ||
| Amino acid | ||
| Basic amino acid | ||
| Important amino acid | ||
| Important basic amino acid. |