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The term "NK T cells" was first used in mice to define a subset of T cells that expressed the natural killer (NK) cell-associated marker NK1.1 (CD161). It is now generally accepted that the term "NKT cells" refers to CD1d-restricted T cells , present in mice and humans, some of which coexpress a heavily biased, semi-invariant T-cell receptor ...
Type I NKT cells are less frequent in humans than in mice (1–3% of T cells in most mouse tissues, 50% in mouse liver and bone marrow, and approximately 0.1% of T cells in human blood). All type I NKT cells recognize the marine sponge-derived glycolipid, α-galactosylceramide (α-GalCer). [2] [8] After the encounter with the antigen Type I NKT ...
In particular, type I NKT cells and some type II NKT cells are stained by them. A differentiation of these two types can be obtained in human by using an antibody against the TCR Vα24 chain, which is specific of type I NKT cells. [10] Although they are the most widely used of CD1d oligomers, sometimes CD1d dimers (two units) or pentamers (five ...
KLRG1 is a lymphocyte co-inhibitory, or immune checkpoint, receptor expressed predominantly on late-differentiated effector and effector memory CD8+ T and NK cells. Its ligands are E-cadherin and N-cadherin with similar affinities, [10] respective markers of epithelial and mesenchymal cells. [11]
Cytokine-induced killer cells (CIK) cells are a group of immune effector cells featuring a mixed T- and natural killer (NK) cell-like phenotype.They are generated by ex vivo incubation of human peripheral blood mononuclear cells (PBMC) or cord blood mononuclear cells with interferon-gamma (), anti-CD3 antibody, recombinant human interleukin (IL)-1 and recombinant human interleukin (IL)-2.
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The antigen Thy-1 was the first T cell marker to be identified. Thy-1 was discovered by Reif and Allen in 1964 [5] during a search for heterologous antisera against mouse leukemia cells, and was demonstrated by them to be present on murine thymocytes, on T lymphocytes, and on neuronal cells.