Evaluation of Immunofluorescent and Direct Agglutination Methods for Detection of Specific Toxoplasma Antibodies

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Abstract
Toxoplasma antibodies in human sera have been quantitatively assessed by indirect fluorescent antibody staining. The results obtained correlate well with those obtained by the dye test, by the direct-agglutination test, and by complement fixation. The fluorescent method is slower, but its specificity has been established by absorption studies and by lack of cross-reaction with sera from cases of trypanosomiasis, malaria, kala-azar, sarco-sporidiosis, leptospirosis, syphilis, schistosomiasis, and filariasis.