Fig. 5From: The virulence factor ychO has a pleiotropic action in an Avian Pathogenic Escherichia coli (APEC) strainSurvival assay. One-day-old broiler chicks were infected with 109 CFU ml−1 bacteria (n = 20). There was no statistical significance determined by the Log-rank (Mantel-Cox) test compared with the SEPT362 strain (p > 0.05)Back to article page