GBS is surrounded by a bacterial capsule composed of polysaccharides ( exopolysacharide ).
2.
A carbohydrate-based bacterial capsule composed of hyaluronic acid surrounds the bacterium, protecting it from phagocytosis by neutrophils.
3.
So humoral immunity in forms of IgG and complement proteins is the human immune system's response against bacterial capsules.
4.
These include common human pathogens with bacterial capsules ( " Streptococcus pneumoniae, Salmonella typhi, Neisseria meningitidis, E . coli, Hemophilus influenzae, Streptococcus agalactiae, Klebsiella pneumoniae " ).
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