incomplete antibody

(redirected from serum agglutinin)
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incomplete antibody

[‚in·kəm‚plēt ′ant·i‚bäd·ē]
(immunology)
An antibody that cannot directly agglutinate saline-suspended red blood cells, it needs an additive to complete the agglutination.
References in periodicals archive ?
The serum agglutinin test for Brucellosis was positive at 1/320 titer, and then blood culture grew Brucella melitensis.