Inhibitory Effects of the Attenuated Salmonella typhimurium Containing the IL-2 Gene on Hepatic Tumors in Mice

Table 3

Proliferation effect of splenic lymphocyte (mean ± SD).

Groups	TP	TPI	LPS	PHA
Normal	1.141 ± 0.021	1.170 ± 0.025	1.100 ± 0.063	1.074 ± 0.036
TP	1.266 ± 0.039*	1.254 ± 0.095*	1.273 ± 0.046*	1.282 ± 0.051*
TPI	1.374 ± 0.035^*#	1.402 ± 0.033^*#	1.353 ± 0.053^*#	1.383 ± 0.025^*#

* 𝑃<0.05, TPI versus Normal group, TP versus Normal group; ^#𝑃<0.05, TPI versus TP group.
TP: attenuated S. typhimurium with the eukaryotic expression vector; TPI: attenuated S. typhimurium with the eukaryotic expression plasmid carrying IL-2 gene.