an artificial molecule was synthesized by covalently linking the oligosaccharide haptens derived frm streptococcus pneumoniae type 6a and neisseria meningitidis group c capsular polysaccharides to the non-toxic mutant protein crm197 , serologically related to diphtheria toxin .
C0028959
oligosaccharide
C0032594
polysaccharides