Figure 10. Proposed model for the differential actions of Coa and vWbp.
S. aureus Newman forms two concentric barriers in the presence of fibrinogen in the growth medium: the outer MAM and the inner pseudocapsule; both contain fibrin. The MAM is dependent on vWbp and inhibits neutrophil immigration into the vicinity of the microcolony. The pseudocapsule is partially dependent on Coa and acts as a second barrier preventing neutrophil invasion of the microcolony.
