Cytotoxic activity of patients' GL following culture in medium alone or with IL-2 (10 ng/mL) or IL-15 (10 ng/mL) and both cytokines. (A) Results obtained from CD3⁺ GL (n = 9) against K-562 target cells. (B) Data obtained from CD3⁻ GL (n = 4) against NK-resistant Raji targets.