The strength of a solution as determined by TITRATION. In medicine it is used to describe the amount of antibody (see ANTIBODIES) present in a known volume of SERUM.
n. (in immunology) the extent to which a sample of blood serum containing antibody can be diluted before losing its ability to cause agglutination of the relevant antigen. It is used as a measure of the amount of antibody in the serum.
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