IL-15-dependent upregulation of GITR on CD8 memory phenotype T cells in the bone marrow relative to spleen and lymph node suggests the bone marrow as a site of superior bioavailability of IL-15.

Abstract excerpt

CD8 memory T cells are enriched in the bone marrow, a site where these cells are thought to receive homeostatic signals. However, the primary site where CD8 memory T cells receive their cytokine-induced homeostatic signals has recently come under debate. In this study, we demonstrate that the bone marrow contains a fraction of CD8 memory phenotype T cells with elevated expression of glucocorticoid-induced...

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