CD33+ CD11b+ HLA-DR− CD14+ CXCR4+/− CD39+/− ARG-1+ iNOS+ PD-L1+ ROS+ CD73− CD117+/− CD34+/− CD66b+/− CD15weak MDSCs from tumor tissue have higher PD-L1 expression. The gene discussed is CEACAM8; the disease is neoplasm.