Circulating IgG antibodies were measured in 192 sera of children aged from 4 months to 17 years suffering from different forms of food hypersensitivity against antigen of selenium enriched baker's yeast autolysate and its soluble fraction and also against antigens of 24 common foods (milk, egg, meat, vegetables, fruits). It was shown that yeast autolysate could be attributed as a product with weak sensitizing activity if antibody titers were compared in general group of patients or in children aged below 3 years. Removal of cell's coats from centrifugation clarified autolysate diminished its sensitizing properties in great extent.
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