complement fixation(redirected from fixation reaction)
Also found in: Thesaurus, Medical, Encyclopedia.
Related to fixation reaction: complement fixation reaction
The binding of active serum complement to an antigen-antibody pair. It is the basis for various diagnostic tests to detect the presence of a specific antigen or antibody.
the binding of complement to immune complexes or to certain foreign surfaces, as those of invading microorganisms.
Switch to new thesaurus
|Noun||1.||complement fixation - an immune response in which an antigen-antibody combination inactivates a complement (so it is unavailable to participate in a second antigen-antibody combination)|