[Gel diffusion tests in malaria. Validity according to different techniques of extracting soluble antigens. Sensitivity compared with indirect immunofluorescence].

The value of the gel diffusion test in human malaria varied considerably, depending on the different methods tested to obtain soluble antigens. With one of these antigens, a saponin lysate of Plasmodium falciparum infected erythrocytes, the test proved as sensitive and specific as the IFA test with the homologous antigen.