FIGURE 5.

MLST clonal complexes (CCs) of 70 tested strains of C. jejuni with different biofilm formation capabilities (A), and the proportions of the C. jejuni strains whose biofilm formation was enhanced by 40 μM Fe²⁺ and/or 20 μM Fe³⁺ (B). The low-, medium-, and high-level biofilm formers are the strains that generated OD₅₉₅ of less than 0.3, between 0.3 and 0.5, and greater than 0.5, respectively, in the absence of iron. The MLST CCs of the 70 C. jejuni strains tested in the study were determined in our previous report (Oh et al., 2015).