title: Investigation into the immunoglobulin class responsible for the polar staining of Toxoplasma gondii in the fluorescent antibody test.
abstract: Bipolar staining of the trophozoites of Toxoplasma gondii has been observed with a number of sera from patients. It has been demonstrated that the serum factors involved are IgM. The majority of sera demonstrating this phenomenon had raised nonspecific IgM levels.
mesh_terms: D000293:Adolescent; D000328:Adult; D002648:Child; D005455:Fluorescent Antibody Technique; D006801:Humans; D007075:Immunoglobulin M / Q000032:analysis; D007152:Immunologic Capping; D014122:Toxoplasma / Q000276:immunology*; D014123:Toxoplasmosis / Q000276:immunology*
chemical_list: D007075:Immunoglobulin M