S.flexneri serotypes

The S. flexneri serotype 6 structure is in fact unrelated to the other S. flexneri repeating units and should be classified separately [20], One of the two proposed structures [92, 93] has been the target of a synthetic study which provided a branched tetrasaccharide structure [94] and separate work gave a disaccharide monoacetate structure [95],... 

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