Figure 2

Area under the curve (AUC) (A) and Relative Growth (RG) (B) box plots of 3 susceptible and 3 resistant P. multocida isolates after 3 hours of incubation without antibiotic (=ZER) or with 4 µg/mL of tetracycline (=FOU). For resistant strains, no clear difference between both AUCs is noticed and RGs are high, whereas susceptible strains obtain a lower RG. The horizontal red line represents a RG cut-off value of 0.5.