the structures for two cross-reactive capsular polysaccharides isolated from streptococci pneumoniae types 19 and 57 are proposed based on the analytical data obtained from methylation , enzymatic degradation , and periodate oxidation experiments performed on both intact polysaccharides and oligosaccharides isolated from hydrofluoric acid hydrolysates .
C0032594
polysaccharides
C0028959
oligosaccharides