PROTEIN
Set to 3 different clues across 3 published puzzles, most often “Amino acid chain” — The New York Times, Tuesday, 16 July 2002.
7 letters
Every clue on record, most used first
- Amino acid chainonce
The New York Times — Tuesday, 16 July 2002
- Kind of shampooonce
The New York Times — Friday, 7 June 1996
- Collagen, e.g.once
The New York Times — Friday, 2 February 1996