Figure 4

Quantitation of bacterial burden in the spleen upon oral infection of birds with WT or Δms strains of S. Typhimurium : the spleen was homogenized in sterile PBS and 100 μl homogenate was plated on HEA plates. The CFU per spleen was calculated after 7 and 14 days post infection (dpi). The data are presented as mean ± SE (n = 5). * p < 0.05.