However in a study of 467 lepromatous lepers, Almeida, Lima & Carvalho (1955), found the quantitative complement fixation test of Wadsworth, Maltaner & Maltaner (1938), highly specific for syphilis, when cardiolipin was used as antigen. It was pointed out that the evaluation of the specificity of the reactions, in many cases, was plagued by uncertainties, since reliable information of clinical ...