Table 1. Overview of monocyte and macrophage markers.

Marker	Synonyms	Tissue cell populations	Monocyte/macrophage subset	Notes
CD11b	CR3, C3biR, Integrin alphaM, ITGAM, Mac-1, Mo1	B cells, dendritic cells, granulocytes, macrophages, monocytes, NK cells and T cells	Pan-macrophage
*CD14	Monocyte differentiation antigen CD14, LPS receptor	B cells, dendritic cells, granulocytes, macrophages and monocytes	Pan-monocyte	*Co-expression with CD16 identifies monocyte subsets
*CD16	FcγRIIIA	B cells, macrophages, monocytes, neutrophils, NK cells T cells	CD14++/CD16- - classical CD14++/CD16+ - intermediate CD14+/CD16++ - non-classical
CD68	gp110, LAMP4, Macrosialin, SCARD1	B cells, dendritic cells, endothelial cells, fibroblasts, granulocytes, hematopoietic stem cells (LT), macrophages, monocytes, NK cells and T cells	Pan-macrophage	Intracellular expression
CD80	B7, B7-1, B7.1 BB1, CD28LG, CD28LG1, LAB7	B cells, dendritic cells, macrophages, monocytes and T cells	M1	Co-stimulatory with CD86
CD86	B7-2, B7.2, B70, CD28LG2, LAB72	B cells, dendritic cells, macrophages, monocytes and T cells	M1
CD163	D11, D1 1C163A, GHI/61, M130, MM130, RM3/1, SCARI1	B cells, macrophages and monocytes	M2c	Identifies a subset of CD206+ macrophages in skeletal muscle
CD206	CLEC13D, mannose receptor, MMR, MRC1	Dendritic cells, certain skin cells, endothelial cells, macrophages and monocytes	M2	In rare instances, Pax7+ skeletal muscle satellite cells co-express CD206
Markers in non-injured human skeletal muscle
CD11b+/CD206-	M1-like macrophages			FC - Also expresses CD14
CD11b+/CD206+	M2-like macrophages			FC - Also express CD14 and CD86
CD163+/CD206+	M2c macrophages
FC = multichannel flow cytometry analysis