Cell invasion capacity of <i>S.</i> Senftenberg strains.

<p>In vitro invasion and intracellular multiplication were performed in epithelial cell lines (HT29 and LMH) and macrophages (HD11 and J774). Persistent (P) (SS308, SS209) and non-Persistent (NP) (SS304, SS278) strains were analyzed in addition to a human isolate (H) (SS291). Cells were infected at a MOI of 10 CFU/cell and the number of intracellular bacteria was determined 2 h (<b>black</b>) and 20 h (<b>grey</b>) post-infection. Data representing the mean ± SD of at least two independent experiments carried out in duplicate. The invasive strain of <i>Salmonella</i> Enteriditis LA5 was used as a positive control.