title: [Immunoreactivity to the products of normal microflora. I. Observations on stability of the level of normal human antibodies to common antigens of enterobacteria].
abstract: A four-fold (in the course of one year) examination of the blood sera was carried out in 81 children aged under 11 years with the aid of the indirect hemagglutination reaction permitting to record 7S-antibodies to common intracellular protein antigens of enterobacteria. In 64 cases (79%) the antibody titres remained constant for one year. Variations in the titres were seen in 17 cases and were not over two (14.8%) or four-fold (6.2%) serum dilutions. Results of observations pointed to marked stability of the individual levels of immunoreactivity to the antigenic products of normal automicroflora constantly present in the organism.
mesh_terms: D000907:Antibodies, Bacterial / Q000096:biosynthesis*; D000942:Antigens, Bacterial; D001426:Bacterial Proteins / Q000276:immunology*; D002648:Child; D002675:Child, Preschool; D004755:Enterobacteriaceae / Q000276:immunology*; D006386:Hemagglutination Tests; D006801:Humans; D013997:Time Factors
chemical_list: D000907:Antibodies, Bacterial; D000942:Antigens, Bacterial; D001426:Bacterial Proteins
vernacular_title: Immunoreaktivnost' k produktam normal'noĭ mikroflory. Soobshchenie I. Nabliudeniia o stabil'nosti urovnia normal'nykh antitel u cheloveka k obshchim antitelam semeĭstva énterobakteriĭ