Electron microscopic definition of surface antigens of group B Streptococcus

The Journal of Infectious Diseases
D L Kasper, C J Baker

Abstract

Strains representing each of the five serologically distinct types of group B Streptococcus and variant strain 090R, which is devoid of type-specific polysaccharide, were studied by electron microscopy after incubation with various ferritin-conjugated antibodies. Ferritin-conjugated types Ia, II and III antibodies localized on homologous cells in a pattern that defines the capsular location of the type Ia, II, and III polysaccharide antigen. Type Ib and Ic cells have surface antigens to which ferritin-labeled antibodies to both capsular polysaccharide and a common surface protein attach.

Citations

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