TCELLS
Set to 3 different clues across 3 published puzzles, most often “Immune system circulators” — The New York Times, Friday, 17 June 2011.
6 letters
Every clue on record, most used first
- Immune system circulatorsonce
The New York Times — Friday, 17 June 2011
- Immune system lymphocytesonce
The New York Times — Sunday, 10 August 2003
- Immune system membersonce
The New York Times — Friday, 10 May 1996