FIG 6.

K. kingae polysaccharide capsule and exopolysaccharide are multifunctional surface structures that facilitate neutrophil evasion. K. kingae polysaccharide capsule and exopolysaccharide function distinctly to promote neutrophil evasion. The K. kingae polysaccharide capsule prevents ROS production and neutrophil association while the K. kingae exopolysaccharide reduces neutrophil phagocytosis and sensitivity to antimicrobial peptides. The presence of either the capsule or the exopolysaccharide blocks complement and antibody opsonization.