CD4 and peritoneal neoplasm: CD3 + CD4 + Tim-3 + T cells had higher frequencies in gastric secondary peritoneal neoplasms patients’ peripheral blood, respectively compared with colon group and gynecology group (5.38% vs. 1.54%; p = 0.038; 5.38% vs. 1.64%; p = 0.042, Fig. 5B).