CD91-105

CD antigen	MW.(kDa)	Synonyms & Properties	Leukocyte expression	Function
CD91	515, 85	α-2 macroglobulin receptor (ALPHA2M-R), low density lipoprotein-receptor-related protein (LRP)	Monocytes, many non-hematopoeitic cells	2-macroglobulin receptor
CDw92	70	GR9	Monocytes, granulocytes, peripheral blood lymphocytes (PBL)	Not known
CDw93	110	GR11	Monocytes, granulocytes, endothelial cells	Not known
CD94	70	Kp43; forms complex with NKG2-A (which contains cytoplasmic immunoreceptor tyrosine-based inhibition motifs)	NK cells, subsets of CD8+ αβ and γδ T cells	Subunit of complex with NKG2-A that is involved in inhibition of NK cells
CD95	45, 90, >/200	APO-1, Fas antigen (Fas)	Activated T and B cells	Mediation of apoptosis-inducing signals
CD96	160	T-cell activation increased late expression (TACTILE)	Activated T cells, NK cells	Not known
CD97	75-85	BL-KDD/F12	Activated B and T cells, monocytes, granulocytes	Binding to CD55
CD98	125	4F2, FRP-1, RL-388 in mouse	Not hemaopoeitic specific; activated and transformed cells; lower levels on quiescent cells	Role in regulation of cellular activation
CD99	32	CD99R (epitope restricted to subset of CD99 molecules), E2, MIC2 gene product	Peripheral-blood lymphocytes, thymocytes	Not known
CD100	300, 120		Most hematopoeitic cells except immature bone-marrow cells, RBCs, and platelets; activated T cells, germinal-center B cells	Promotion of T-cell activation and adhesion
CD101	240	P126, V7	Monocytes, granulocytes, dendritic cells, activated T cells	Possible role in T-cell activation
CD102	55-65	Intercellular adhesion molecule-2 (ICAM-2)	Vascular endothelial cells, monocytes, platelets, some populations of resting lymphocytes	Co-stimulation of immune responses; lymphocyte recirculation
CD103	175	HML-1, integrin αE chain	Intraepithelial lymphocytes (in tissues such as intestine, bronchi, inflammatory skin/breast/salivary glands), many laminapropria T cells, some lymphocytes in peripheral blood and peripheral lymphoid organs	Role in the issue-specific retention of lymphocytes at basolateral surface of intestinal spithelial cells; possible accessary molecule for activation of intraepithelial lymphocytes
CD104	220	β4 integrin chain, tumor-specific protein 180 antigen (TSP-180) in mouse	CD4 CD8 thymocytes, neuronal, epithelial, and some endothelial cells, Schwann cells, trophoblasts	Integrin that associates with CD49f, binds laminins
CD105	180	Endoglin	Endothelial cells of small and large cessels, activated monocytes and tissue macrophages, stromal cells of certain tissues including bone precursors in fetal and adult bone marrow, syncytiotrophoblast throughout pregnancy and cytotrophoblasts transiently during first trimester	Modulator of cellular responses to TGF-β1