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CD Makers
Med3
| what is. whose got it | what's it do |
|---|---|
| CD2 (LFA-2); T cells, thymocytes, NK cells | Adhesion molecule |
| CD3; T cells, thymocytes | Signal transduction by the TCR |
| CD4; Th cells, thymocytes, monocytes, and macrophages | Coreceptor for TCR-MHC II interaction, receptor for HIV |
| CD8; CTLs, some thymocytes | Coreceptor for MHC class I–restricted T cells |
| CD14; Monocytes, macrophages, granulocytes | Binds LPS |
| CD16 (Fc receptor); NK cells, macrophages, neutrophils | Opsonization in Antibody Dependent Cell-Mediated Cytotoxicity (ADCC) |
| CD18; Leukocytes | Cell adhesion molecule (missing in leukocyte adhesion deficiency) |
| CD19; B cells | Coreceptor with CD21 for B-cell activation (signal transduction) |
| CD20; Most or all B cells | Unknown role in B-cell activation |
| CD21 (CR2); Mature B cells | Receptor for complement fragment C3d, forms coreceptor complex with CD19, Epstein-Barr virus receptor |
| CD25; Activated Th cells and TReg | Alpha chain of IL-2 receptor |
| CD28; T cells | T-cell receptor for costimulatory molecule B7 |
| CD34; Precursors of hematopoietic cells, endothelial cells in HEV | Cell–cell adhesion, binds L-selectin |
| CD40; B cells, macrophages, dendritic cells, endothelial cells | Binds CD40L, role in T-cell–dependent B cell, macrophage, dendritic cell and endothelial cell activation |
| CD56; NK cells | Cell adhesion |
| CD152 (CTLA-4); Activated T cells | Negative regulation: competes with CD28 for B7 binding |