FIG. 3.

Quantitative transcript analysis of S. aureus strains Newman (A), Reynolds (B), and RN6390 (C) by LightCycler RT-PCR during device-related infection. Levels of clfA transcripts in bacteria of the exudates (black bars) and in sessile bacteria attached to glass beads (hatched bars) were quantified in reference to the levels of gyrB transcripts (left y axis). Bacterial densities (right y axis) in the exudates (black diamonds; CFU per milliliter) and on glass beads (white squares; CFU per bead) were determined at each time point.