The importance of the microprecipitation reaction in agar in the diagnosis of toxoplasmosis

: The authors examined 56 pigs by an isolation experiment for Toxoplasma gondii and simultaneously by the Sabin-Feldman reaction, microprecipitation reaction in agar (MPA), quantitative microprecipitation reaction in agar (MPAK), reaction with complement-fixing and indirect haemagglutination reaction with toxoplasma antigen. In nine pigs with positive isolation finding, the Sabin-Feldman reaction and quantitative microprecipitation reaction in agar was positive in eight cases. In cases of negative Sabin-Feldman reaction, the quantitative microprecipitation reaction was always negative. The quantitative microprecipitation reaction in agar is therefore a suitable indicator of the success of isolation experiments. For a simplicity of the test it is suitable for immunological diagnostics of toxoplasmosis in pigs in common practice.