Fig. 3.

Poultry S. aureus strain ED98 exhibits increased resistance to killing by avian neutrophils (heterophils) in comparison with the human basal S. aureus strain MR1. Survival of poultry strain ED98 and human strain MR1 after opsonization with avian or human plasma followed by incubation with avian heterophil samples (n = 17) or human neutrophils (n = 13), measured by percentage reduction in colony count in the coculture compared with the colony count of the bacteria alone. Error bars indicate SE.