Definicija: originally, the study of the in vitro reactions of immune sera, e.g., precipitin, agglutination, and complement fixation reactions. The term is now used to refer to the use of such reactions to measure serum antibody titers in infectious disease (serologic tests), to the clinical correlations of the antibody titer (the "serology" of a disease), and to the use of serologic reactions to detect antigens (e.g., "serologically defined" HLA antigens).
Vir definicije: Dorland's Illustrated Medical Dictionary