Presenca de inibidor específico de fixaçào de complemento : Em antígenos preparados de trypanosoma cruzi / Presence of specific complement-fixation inhibitor in antigens prepared from trypanosoma cruzi

ABSTRACT

Tritation performed by the quantitative complement fixation method on sera from parasitologically confirmed Chagas' disease eases using an aqueous of a methylic extract of Tripanosoma cruzi as antigen, revealed a marked discrepancy in titers. The serum titer was expressed by the slope of the regresion line between amounts of serum and number of complement units needed for 50 per cent hemolysis