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  • Title: [Antigenic identity of the capsule lipopolysaccharides, exopolysaccharides, and O-specific polysaccharides in Azospirillum brasilense].
    Author: Matora LIu, Shchegolev SIu.
    Journal: Mikrobiologiia; 2002; 71(2):211-4. PubMed ID: 12024821.
    Abstract:
    The antigenic identity (and close values of electrophoretic mobility) of capsular polysaccharides, exopolysaccharides, and O-specific polysaccharides was revealed in the Azospirillum brasilense strains Sp7 and Sp245 by the immunodiffusion and immunoelectrophoretic methods. Together with the literature data on the identity of the monosaccharides composition of these polymers, this gives evidence of the absence of a specific capsular antigen in the bacteria studied. Thus, extracellular Azospirillum brasilense polysaccharides are likely to represent O-antigenic lipopolysaccharide fragments excreted by the bacteria into the culture medium, and their identification as a capsule or as an exopolysaccharide depends on the strength of the attachment of these polysaccharides to the cell surface.
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