NKT cells recognize lipid Ags presented by CD1d molecules and play an important role in the regulation of innate and adaptive immune responses. In this study, we report the identification of a membrane-associated protein, Ig-like transcript 4 (ILT4), as a novel human CD1d receptor that inhibits CD1d-mediated immune responses. We found that native CD1d tetramer generated by mammalian cells was able to specifically bind human monocytes in the peripheral blood, and this binding was at least part...Expand abstract
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Ig-like transcript 4 inhibits lipid antigen presentation through direct CD1d interaction.
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