Fig. 3From: The virulence factor ychO has a pleiotropic action in an Avian Pathogenic Escherichia coli (APEC) strainInvasion assay in CEC-32. Comparison of strains after 1 h of incubation in 50 μg ml−1 gentamicin and survival after 1.5 h in 5 μg ml−1 gentamicin. Statistical significance was determined by Tukey’s test in comparison with the count of the strain SEPT362 (**, p < 0.01, *, p < 0.05)Back to article page