CD56⁺CD8⁺CD45RO⁺ cells can recruit different cells of innate immunity. (A) CD56⁺CD8⁺ cells were depleted using CD45RA microbeads and stained for CD45RO expression; retained cells (▩) and flow-through (□). (B) Ability of memory CD56⁺CD3⁺ cells to recruit different leukocyte subsets in response to cross-linked FasL; CD45RO^- cells (□) and CD45RO⁺ cells (▪). The horizontal line at migration index 1.0 indicates lack of chemotaxis. Cell purity was as follows: CD4⁺ T cells (> 95%), CD8⁺ T cells (> 90%), monocytes (> 80%), granulocytes (> 98%), NK cells (> 95%), B cells (> 95%). Data shown are the mean ± SEM of 2 different donors.