Table 2.

Percentages of CD4⁺ T cells and CD8⁺ T cells subsets in immunized BALB/c mice (n = 3 animals per group) by flow cytometry

Groups	CD3+ CD4+ CD8− (%)	CD3+ CD8+ CD4− (%)
Blank control	19.06 ± 1.89	14.13 ± 1.34
PBS	19.23 ± 1.45	13.08 ± 1.18
pEGFP-C1	18.52 ± 1.36	14.05 ± 1.02
pEGFP-SOD	28.79 ± 2.74*	30.94 ± 3.27*

Results are expressed as the mean ± SD (n = 3 animals per group) from three independent experiments. The splenocyte suspensions were detected by flow cytometry

*Compared with blank control, PBS or pEGFP-C1 controls, p < 0.05