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Figure 4: Distribution of the eukaryotic expression vector promoter CMV in tissues of TPI group mice treated with recombinant attenuated S. typhimurium strains. Lane 1: DNA marker DL2000; lane 2: liver tissue as template; lane 3: spleen tissue as template; lane 4: kidney tissue as template; lane 5: tumor tissue as template; lane 6: lung tissue as template; lane 7: intestine tissue as template.