Figure 5.
Possible models of NKT cell-mediated mechanisms in periodontitis: The references and experimental study model is given in parentheses (human, animal, and in vitro). NK—natural killer cell; NKT—natural killer T cell; DC—dendritic cell; iNKT cell—invariant natural killer T cell; TH—T helper cell; TCR—T-cell receptor; KIR—killer cell immunoglobulin-like receptor; CRACC—CD2-like receptor-activating cytotoxic cell; NCR-1—natural cytotoxicity triggering receptor 1; IL—interleukin; TLR—Toll-like receptor; and CD—cluster of differentiation.