The author examined, using the immunofluorescence test, 107 ant HIV positive sera and 114 sera with false reactions in the ELISA test. He proved a high sensitivity and specificity of the immunofluorescence test in the detection of anti-HIV antibodies, comparable with Western-blot's technique and he established the value of the immunofluorescence test for the identification of the virus antigen on isolation of the virus from HIV infected patients.
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