Table 2.

Titration of fibronectin clumping of S. aureus

Strain (genotype)Fibronectin-clumping titera
Exponential growth phaseStationary growth phase
GP268 (rsbU+V+W+sigB+)1 1
BB255 (rsbU) 250 125
BB255 (ΔrsbUVWsigB) 125 125
  • a Clumping titer, lowest fibronectin concentration (in μg/ml) showing clumping. Results are expressed as the median of results from five to nine independent experiments.