Figure 4: Effect of the different concentrations of EIF (0.01 μg/ml, 0.1 μg/ml, 0.5 μg/ml, 1 μg/ml, 10 μg/ml and 100 μg/ml) on splenocyte proliferation stimulation index (SSI) (C: Control, NC: Negative Control, LPS: Lipopolysaccharide). [Each value has been expressed as mean ± SD of five independent experiments. P values less than 0.01 (*P <0.01) and 0.05 ($P <0.05) were considered to be statistically significant].