Spectratype analysis of in vitro culture with PHA. PBMCs from UPN688 (A), UPN885 (B), and UPN1074 (C). For each patient, the TCR profiles of 3 representative BV families (indicated on top of each pair of spectratypes) are shown. The spectratype of the PBMC before culture (pre) is shown at the top of each panel and that after the culture (post) is shown on the bottom.