Enter a clue or pattern or both:
The Clue
Collectors of DNA (4 letter answer)
The Answer
CSIS
Tags
Notes
The answer CSIS is so rare that it appears less than once every 2500 puzzles.
Related Clues
A couple CBS spinoffs
Several CBS dramas
Definition
CSIS as a noun:
1. (Canadian Security Intelligence Service, CSIS) = Canada's main foreign intelligence agency that gathers and analyzes information to provide security intelligence for the Canadian government