According to the statistical analysis of the results from this study, Naloxone had no significant effect on the number of B cells in gastric cancer patients, while in contrast with the naloxone group, the nonnaloxone group showed a significant decrease in CD3+ T cells and CD4+ T cells 24 h after surgery (Supplementary Table 3, Supplementary Table 4). The gene discussed is CD4; the disease is gastric cancer.