Fig. 2From: A phase II clinical trial of adoptive transfer of haploidentical natural killer cells for consolidation therapy of pediatric acute myeloid leukemiaKaplan-Meier survival curves comparing the overall survival (a) and event-free survival (b) of 21 patients with NK cell infusion (dashed line) with that of 53 patients who completed 4 courses of chemotherapy but did not receive NK cell infusion (solid line)Back to article page