Fig. 4From: Differential roles for pathogenicity islands SPI-13 and SPI-8 in the interaction of Salmonella Enteritidis and Salmonella Typhi with murine and human macrophagesContribution of SPI-13 and SPI-8 to the internalization and intracellular survival of S. Enteritidis and S. Typhi in human macrophages. Infection assays were conducted as described in “Methods” section to determine the internalization and intracellular survival of S. Enteritidis (a) and S. Typhi (b) strains in THP-1 macrophages. Graphics show mean values of at least 3 independent assays ± SEM. Statistical significance was determined using a one-way ANOVA with Dunnett’s testBack to article page