Fig. 2

Quantification of the in vitro biofilm formation on stainless-steel pins. A 0.25 mm² ROI in the 150x SEM images of the pins (n = 4) described in Fig. 1 was used to quantify the % surfaced covered by the biofilm using NIH Image, and the data are presented as the mean +/− SD (*p < 0.05 vs. no inoculation in TSBGN media; ^#p < 0.05 vs. no inoculation in TSB + HP media; ^@ p < 0.05 TSBGN vs. TSB + HP for each strain)