Figure 4. The percentage of CD4+ T cells in the lymphocyte population in each group (%,) on postoperative day 14. The percentage of CD4+ T cells in the peripheral blood lymphocyte population (A), cervical lymph nodes (B), and spleen (C). Values represent mean±SD, n=5 mice/group, *p<0.05 versus the control group. D: Flow cytometry showing the distribution of CD4+ T cells in lymph nodes.