PAVLOV
Set to 2 different clues across 2 published puzzles, most often “Conditioned reflex researcher” — The New York Times, Sunday, 25 June 2000.
6 letters
Every clue on record, most used first
- Conditioned reflex researcheronce
The New York Times — Sunday, 25 June 2000
- 1904 Physiology Nobelistonce
The New York Times — Wednesday, 26 July 1995