Figure 4

Deletion of fliC facilitates bacterial replication and reduces IL-6 and TNF-α secretion in macrophages. A, B, E RAW264.7 cells were infected with ST34 S. Typhimurium and Salmonella 4,[5],12:i:- strains. C, D, F RAW264.7 cells were infected with ST19 S. Typhimurium and Salmonella 4,[5],12:i:- strains. The N/I group represents the uninfected group. The experiment was performed three times in duplicates. Error bars represent ± SEM. *P < 0.05; **P < 0.01; ***P < 0.001.