[Immunohistochemical detection of antigammaglobulin factors in the serum (author's transl)].

Agglutination procedures for the detection of rheuma factors are inadequate concerning IgG and IgA factors and sensitivity to IgM factors, too, is generally limited. Both these disadvantages are to a great extent overcome when rheuma factors are fluorescence-marked with anti-human-gammaglobulin respectively with monospecific antiserums and when reaction steps according to Svartz and Schlossmann are applied to a microscope slide test. This test and the results of investigations of 101 cases (different joint diseases and healthy blood--donors) are described in this paper.