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Occurrence of a capsule in Aeromonas salmonicida

Antonieta Garrote, Ramon Bonet, Susana Merino, Maria Dolors Simon-Pujol, Francisco Congregado
DOI: http://dx.doi.org/10.1111/j.1574-6968.1992.tb05354.x 127-131 First published online: 1 August 1992


Aeromonas salmonicida grown in a medium with excess glucose as carbon source produces both capsular and exocellular polysaccharides. The capsular polysaccharide is composed of glucose, mannose, rhamnose, N-acetylmannosamine and mannuronic acid in the molar ratios of approximately 5:3:0.75:2:1. The extracellular polysaccharide is similarly constituted, but in the molar ratios of approximately 4.75:10.5:1.5:2:1. The capsular and exocellular polysaccharides did not cross-react with monoclonal antibodies against the A-layer or the O-antigen lipopolysaccharide.

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