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Frequencies of iNKT-cell (invariant natural killer T cell) subsets in the blood and gut mucosal compartments of healthy control individuals. (a–c) The concentrations of total, CD4+, and CD4− iNKT cells as a percentage of all CD3+ T cells in blood and gut mucosal compartments are plotted. Percentages of each of these populations expressing (d–f) human leukocyte antigen (HLA)-DR and (g–i) CCR5 are plotted. Heavy lines indicate the medians.
