| 4 clues |
|---|
| Protein components |
| Tryptophan and kin |
| Protein building blocks |
| Arginine and tryptophan, for two |
| Acetaminophen |
| Acids |
| Acidsalt |
| Acidsoil |
| Acidsprain |
| Amino |
| Aminoacid |
| Aminoacids |
| Aminogroup |
| Aminor |
| Aminorsgripes |
| Aminos |
| Aminot |
| Amnioacids |
| Antacids |
| Antiacids |
| Asiaminor |
| Camino |
| Caminoreal |
| Caminos |