TY - JOUR T1 - Typing Haemophilus ducreyi by indirect immunofluorescence assay. JF - Genitourinary Medicine JO - Genitourin Med SP - 123 LP - 126 DO - 10.1136/sti.61.2.123 VL - 61 IS - 2 AU - L Slootmans AU - D A Vanden Berghe AU - P Piot Y1 - 1985/04/01 UR - http://sti.bmj.com/content/61/2/123.abstract N2 - Rabbits were inoculated with untreated whole cells of 16 strains of Haemophilus ducreyi. Homologous titres in an indirect immunofluorescence test ranged from 1/320 to 1/1280. No cross reactions, or very few, were observed between antisera to these strains and 22 other (possible taxonomically related) species, strains, and genera. A large diversity in types of antigen was observed among the strains of H ducreyi. Antiserum from two antigens (35000 and 3138), however, reacted with all 16 H ducreyi antigens tested. At least nine of the strains of H ducreyi examined could be identified as determining the type of antigen. ER -