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The natural killer (NK) cell receptor, NKG2D is a member of the c-type lectin-activating receptor family. It is expressed by all NK cells and by a sub-population of CD8+ T cells. NKG2D engagement with its ligands directly activates NK cells and acts as a co-stimulator on CD8+ T cells. Recent reports, however, have demonstrated a role for NKG2D in direct(More)
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