CD4 TCRBV repertoire diversity as assessed by spectratyping. (A) D_KL values for 16 subjects with typical complete DiGeorge anomaly. (B) D_KL values for 7 subjects with atypical complete DiGeorge anomaly. (C) CD4 spectratyping profiles for subject DIG005 at 7 years after transplantation. The Jurkat control panel is in the lower right. The D_KL value for this spectratype is 0.11.