[A study on serum titers of anti-streptococcal polysaccharide (ASP) among school children].
D000293:Adolescent; D000907:Antibodies, Bacterial / Q000032:analysis*; D002648:Child; D006801:Humans; D008722:Methods; D011135:Polysaccharides, Bacterial / Q000276:immunology*; D013290:Streptococcal Infections / Q000276:immunology*; D013297:Streptococcus pyogenes / Q000276:immunology*
D000907:Antibodies, Bacterial; D011135:Polysaccharides, Bacterial