EBV-stimulated PDCs increase NK cell-mediated cytolysis. EBV-stimulated PDCs induce lysis of ⁵¹Cr-labeled target K562 cells compared to unstimulated PDCs with NK cells, EBV-stimulated NK cells, or NK cells alone. Results expressed as percentage chromium release at a ratio of NK to target K562 cells of 1:2.5. Results are expressed as mean ± SEM.