Plasma levels of nm23-H1 protein in malignant lymphoma (n = 201) and healthy controls (n = 21; P = .0001, Wilcoxon’s test). Upper and lower lines indicate the 10th and 90th percentiles, and boxes indicate the 25th and 75th percentiles. The line through each box indicates the median. NHL, non-Hodgkin’s lymphoma; ATLL, adult T-cell leukemia/lymphoma; NS, not significant. *P < .05; ***P < .001; ****P < .0001.