Index of diversity. Diversity scores were calculated for deep-sequencing TCR repertoire data from patients with T-LGL leukemia (n = 11; A, right) compared with healthy controls (n = 24; A, left) and analyzed by the Wilcoxon nonparametric method (P < .0001). Index of diversity and TCR repertoire plots for a T-LGL patient before therapy, D = 0.060 (B), and following complete remission, D = 0.966 (C). Note differences in y-axis values between panels B and C.