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. 1979 Feb;23(2):438–445. doi: 10.1128/iai.23.2.438-445.1979

Strain specificity of opsonins for group B streptococci types II and III.

A O Shigeoka, R T Hall, H R Hill
PMCID: PMC414184  PMID: 370017

Abstract

Strains of types II and III group B streptococci do not appear to be uniformly susceptible to opsonization by antibody-containing human sera, as studied using both a chemiluminescence and a radiolabeled bacterial uptake technique. We could not demonstrate a correlation of serum-sensitive or resistant strains with capsular antigen quantities, although serum absorption studies with whole organisms and HCl, trichloroacetic acid, and saline extracts indicated that the antibody to type-specific capsular polysaccharide is important in opsonizing both serum-resistant and serum-sensitive strains. Since trypsin treatment produced significantly enhanced opsonization of serum-resistant and serum-sensitive strains, proteins present on some group B streptococci may be important antiphagocytic factors.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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