Contribution of CD11c⁻ hematopoietic cells in memory CD8 T-cell homeostasis. BM cells were isolated from IL-15Rα^−/−, CD11c-IL-15RαTg-1, and Wt mice (all CD45.2⁺) and transferred into lethally irradiated Wt hosts (CD45.1⁺). CD8 T cells were isolated from VSV-infected Thy1.1⁺ cells, labeled with CFSE, and transferred into the various BM chimeras after lymphocyte reconstitution (between 8 and 12 weeks after BM transfer). Six weeks after transfer, CFSE dilution of donor cells was measured.