The bacterial load in course of time after SE infection and its effect on growth and numbers of IELs and splenic leukocytes. A Salmonella enterica serotype Enteritidis (CFU/g) in the ileum and B spleen of uninfected (uninf) and SE-infected chickens (SE-inf). The LOD was 100 CFU per gram tissue. C Bodyweights (g) of uninfected and SE-infected chickens in the course of time. D Numbers (cells/mg) of IELs per mg ileum and E leukocytes per mg spleen of uninfected and SE-infected chickens in the course of time. Mean + SEM per treatment and time point is shown (n = 5) and statistical significance is indicated as ** p < 0.01 and **** p < 0.0001.