Figure 4.
Combination of SEP and αPD-L1 on T cell subsets from tumor in B16-F10-bearing mice. The mouse tumors were harvested at the end of the experiment (day 16). The cell counts for CD3+, CD4+ and CD8+ T cells from mouse tumor were determined by flow cytometry. The increase in the percentage of either CD3+, CD4+ or CD8+ T cells was observed in three treatment groups (each treatment P < 0.05 for each T cell, respectively, n = 6). And, combination of SEP and αPD-L1 had significantly additive increase of either CD3+, CD4+ or CD8+ T cells compared with SEP (each T cell P < 0.05, respectively, n = 6) or αPD-L1 (each T cell P < 0.05, respectively, n = 6). The results were presented as mean ± SEM. * P < 0.05 compared with control group. # P < 0.05, compared with SEP group. & P < 0.05, compared with αPD-L1 group.