Table 2.

Common molecules and functions of MDSCs in humans.

	M-MDSC	PMN-MDSC	e-MDSC
	CD11b+CD14+CD15−CD33+ HLA-DR−	CD11b+CD14+ CD15+ (or CD66b+) CD33+LOX-1+	Lin−HLA-DR−CD33+
Extracellular ROS	+	++	+
NO	++	−	+
ARG1	+	++	+
iNOS	++	+	−
PGE2	+	++	N/A
IL-10	+	+	N/A