Table 1.

Staphylococcus aureus strains used in this study

Strain	Description	Reference
Newman	High level of clumping factor	11
Newman sigB null	Newman sigB null mutant	10
N315		23
KVR	N315 vraSR null mutant	22
BB255/psas016p-luc+	BB255 harboring pBUS1 containing the sas016 promoter-luciferase reporter gene fusion	8