“…Franklin and Dukes (10) described a micro-agglutination technique which has been employed mainly for the analysis of sperm-agglutinating activity in sera from women. This micro-agglutination technique revealed sperm-agglutinating activity in 7-79 per cent of women with "unexplained" infertility (5, 10, 11, 12, 13, 16, 17, 22, 26).…”