COLANIC ACID

Abstract
The colicinogenic bacillus Escherichia coli K235 L + O (m) elaborates a serologically active, N-free polysaccharide called colanic acid. The isolation of this substance and its immunological properties were described. Colanic acid is a capsular polysaccharide which confers upon the bacillus its mucoid characteristics and certain of its serological properties.

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