Figure 2: Growth responses of C. jejuni 81-176 to anti-CmeC serum and control serum (pre immune serum). The log-phase culture of 81-176 was diluted to approximately 2 x 106 cfu/ml in MH broth containing sublethal concentrations of cholic acid (2 mg/ml). Anti-CmeC and control sera were added to cells with 1:10 dilution and cells were incubated for 6 hours at 42C under microaerophilic conditions. Samples were diluted in MH broth and plated on MH agar plates to determine bacterial viability. Each bar represents the mean value obtained from triplicate assays.