Treponemal Antigens and Their Use in Syphilis Serological Tests

able absorbance acid active addition advantages amounts antigens reacting assay bind blood donors bound cardiolipin chromatography compared conjugate contained cross-react with antigens cross-reacting crossed culture Department described detected develop diagnostic sensitivity diagnostic specificity ELISA for IgG especially evaluate false positive false reactive results five flagella flagellum ELISA fraction FTA-ABS test identical IgM antibodies IgM ELISA indicate indirect infected known late syphilis less lipid method nonreactive obtained pallidum antigens pallidum specific Petersen plates polysaccharide precipitates presence previously primary syphilis probably protein purified rabbit recently reinfections Reiter treponemal antigens response rheumatoid factor ribonucleic RNA antigen RNA ELISA routine samples Sand secondary syphilis serum shown solid phase strains Strandberg studies syphilis patients Syphilis serological tests Table technique tests for syphilis titers TPHA TPI test TR-b TR-d treatment Treponema pallidum treponemal tests unpublished results vitro