meningococcal group A polysaccharide / meningococcal group C polysaccharide
meningococcal group a polysaccharide / meningococcal group c polysaccharide
meningococcal group A polysaccharide / meningococcal group C polysaccharide
meningococcal group a polysaccharide / meningococcal group c polysaccharide