title: [Differential characteristics of the I and II phases and R-form of Sh. sonnei].
abstract: Characteristics of various phases of Sh. sonnei were determined on the standard strains of Sh. sonnei of phases I and II and R-form used for the industrial production of agglutinating monoreceptor sera. Bacteria of phase I displayed a distinct morphological, cultural and serological differences. For the differentiation of Sh. sonnei of the II phase and R-form, representing the greatest difficulty in this respect, it is recommended to use phages RFfm and 6-SR, and also indirect immunofluorescence method with the application of agglutinating monophasic serum against the II phase of Sh. sonnei. In addition, a study was made of over 20 various Sh. sonnei strains at different dissociative process phases. Verification data completely confirmed the specificity of phages RFfm and 6-SR for Sh. sonnei in the II phase. The efficacy of the immunofluorescence method was confirmed on 6 strains.
mesh_terms: D000942:Antigens, Bacterial / Q000032:analysis; D001435:Bacteriophages; D003470:Culture Media; D005455:Fluorescent Antibody Technique; D009154:Mutation; D012764:Shigella sonnei / Q000235:genetics / Q000276:immunology / Q000502:physiology*
chemical_list: D000942:Antigens, Bacterial; D003470:Culture Media
vernacular_title: Differentsial'naia kharakteristika I, II faz i R-formy Sh, sonnei.