You know what it looks like… but what is it called?
TAKE THE QUIZ“Treponema pallidum immobilization”
We have one entry that includes the term Treponema pallidum immobilization.
Treponema pallidum immobilization test
noun: a serological test for syphilis in which a solution containing the living causative spirochete (Treponema pallidum) is combined with serum in the presence of complement with immobilization of the active spirochetes indicating a positive result —abbreviation TPI
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Merriam-Webster unabridged