Table 2.

Staphylococcal adhesion forces before and after 10 s bond-maturation.

	S. aureus RN4220 Fi (nN)	S. aureus RN4220 F10 s (nN)	S. aureus RN4220 ΔmscL Fi (nN)	S. aureus RN4220 ΔmscL F10 s (nN)
Polystyrene	0.4 ± 0.4	3.1 ± 2.3	0.3 ± 0.2	3.0 ± 2.4
Gold	1.1 ± 0.8	5.3 ± 2.7	2.5 ± 1.4****	20.4 ± 3.8****
Glass	0.9 ± 0.6	3.5 ± 2.4	0.6 ± 0.3	3.4 ± 1.9
Pluronic-coated glass	0.3 ± 0.2	1.6 ± 1.0	0.2 ± 0.2	0.5 ± 0.6***

Initial adhesion forces F_i between staphylococci and substratum surfaces, and adhesion forces after 10 s bond-maturation F_10 s. ± signs represent standard deviations over at least 45 force–distance curves, comprising for one bacterial probe three different spots, recording five force–distance curves on each spot. Three probes were prepared from three separate bacterial cultures. *indicates significant differences from S. aureus RN4220 (Kruskal–Wallis test, ***p < 0.001, ****p < 0.0001).