To further understand the relationship among Bregs and other T cell subsets in gastric cancer, the percentages of CD3+T cells, CD4+Th cells, CD4+IFN-γ+Th1 cells, CD4+IL-4+Th2 cells and CD4+FoxP3+Treg cells were also detected in PBMCs from GCs. The gene discussed is CD4; the disease is gastric cancer.