NK cell activity is related to chemotherapy response.

<p>A: CD56^dimCD16⁺ (left panel) cells and CD56^hiCD16⁻ (right panel) NK cells counts. Black filled diamonds represent data from patients with progressive disease and white squares represent data from patients with disease control. B: CD69 expression by CD56^dimCD16⁺ (left panel) cells and CD56^hiCD16⁻ NK cells (right panel). C: Death of MelC cells pretreated with PBS or DTIC, and cocultured with NK cells isolated from patients.