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. 1987 Oct;25(10):1854-9.
doi: 10.1128/jcm.25.10.1854-1859.1987.

Cross-reactions between pneumococci and other streptococci due to C polysaccharide and F antigen

U B Sørensen  1 , J Henrichsen
Affiliations

Cross-reactions between pneumococci and other streptococci due to C polysaccharide and F antigen

U B Sørensen et al. J Clin Microbiol. 1987 Oct.

Abstract

By serological methods, all 83 known types of Streptococcus pneumoniae could be shown to possess C polysaccharide and F antigen. Cross-reactions due to these two antigens between pneumococci and a broad range of most other commonly encountered streptococci were examined. The presence of an antigen closely similar or identical to pneumococcal C polysaccharide was demonstrated in some strains of Streptococcus mitior. Therefore, we conclude that pneumococci cannot be identified serologically from mixed samples without culture. Streptococcal group C antiserum was found to cross-react with pneumococcal F antigen.

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References

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