Table 1 Human Clusters of Differentiation (CDs)
From: Aging related changes of circadian rhythmicity of cytotoxic lymphocyte subpopulations
CD3 | the signaling component of the T cell receptor (TCR) complex, found on T cells |
CD4 | a co-receptor for MHC Class II, found on T helper/inducer subset |
CD8 | a co-receptor for MHC Class I, found on T suppressor/cytotoxic subset |
CD16 | FcγRIII, a low-affinity Fc receptor for IgG, found on NK cells, macrophages, and neutrophils |
CD20 | a type III transmembrane protein found on B cells |
CD25 | a type I transmembrane protein found on activated T cells that associates with CD122 to form a heterodimer that can act as a high-affinity receptor for IL-2 |
HLA-DR | a transmembrane human major histocompatibility complex (MHC) II family member expressed primarily on B cells on which it presents antigenic peptides for recognition by the T cell receptor on CD4+ T cells. |
TcRδ1 | epitope of the constant domain δ of chain of TCR found on γδTCR expressing cells |