[An immunoenzyme method for determining IgA antibodies to lipopolysaccharide in secretions in the diagnosis of shigellosis].

IgA antibodies to S. sonnei and S. flexneri lipopolysaccharides (LPS) in secretions, as well as Escherichia coli LPS in coprofiltrates of children with acute diarrhea, were determined with the use of enzyme immunoassay (EIA).

[The determination in saliva of IgA antibodies to Shigella ribosomes for the diagnosis of dysentery].

The levels of antiribosomal antibodies to Shigella ribosomes in serum and saliva samples from 38 dysentery patients (15 S. sonnei cases and 23 S. flexneri cases), 14 patients with salmonellosis and 136 healthy adults were determined in ELISA with ribosomes from S.

[Changes in the sorption of the antigens of the causative agent of typhoid on erythrocytes in the dynamic immune response].

The study of the adsorption capacity of erythrocytes in 4 strains of mice was made. According to the results of the determination of the background capacity of erythrocytes, the strains of mice, opposite with respect to the sorption of S. typhi Vi- and O-antigens, were selected.

[Adsorption of Vi antigen on human erythrocytes].

The accumulation of Vi-antigen in the human body was studied with the use of such characteristic as the specific adsorption capacity of red blood cells. This parameter was shown to depend on the phenotype in the ABO blood group system. In cases of typhoid fever an increase in the adsorption capacity of red blood cells was observed at the acute period of the disease.