Crossword Genius

Kind of monkey used in medical research (6)

Ross

I believe the answer is:

rhesus

(Other definitions for rhesus that I've seen before include "Type of monkey and a blood component" , "Usually a positive factor in man" , "King, in Greek mythology" , "Monkey and blood element" , "Blood type or kind of monkey (6)" .)

I've seen this clue in The New York Times.
Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.