You know what it looks like… but what is it called?
TAKE THE QUIZ“Weil-Felix”
The following 2 entries include the term Weil-Felix.
Weil-Felix reaction
noun: an agglutination test for various rickettsial infections (as typhus and Rocky Mountain spotted fever) using particular strains of bacteria of the genus Proteus that have antigens in common with the rickettsiae to be identified
Weil-Felix test
nounLove words? Need even more definitions?
Merriam-Webster unabridged