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1. German bacteriologist who developed a diagnostic test for syphilis (1866-1925)
   - August von Wassermann
    
2. A blood test to detect syphilis; a complement fixation test is used to detect antibodies to the syphilis organism treponema; a positive reaction indicates the presence of antibodies and therefore syphilis infection
   - Wassermann test, Wasserman reaction

Type of: bacteriologist, complement fixation test

Encyclopedia: Wassermann Wassermann, Jakob