And in the gastric cancer groups, the proportion of CD4− MAIT cells without chemotherapy (79.2%, p = 0.023) was lower than that with chemotherapy (89.8%, Fig. 3b left), the absolute amount of CD4− MAIT cells with chemotherapy (2.23, p = 0.036) was also lower than that without chemotherapy (0.67, Fig. 3b right). The gene discussed is CD4; the disease is gastric cancer.