Existence of HTLV-1–infected cells and ATL clones not only in T_CM and T_EM populations but also in the T_SCM population. (A) Representative data of postsorting samples. Values indicate the purity of each sorted population. (B) The mean value of PVL in each population from HTLV-1 carriers and ATL patients are presented. Error bars indicate 1 standard deviation (SD) in triplicate. (C) Data described in (B) are summarized with box and whisker plots. The boxes represent the 25% to 75% percentiles, whiskers represent the range, and lines in the box represent the median values of the distribution. (D) Data of ATL clone–specific PCR using genomic DNA from 1 × 10³ cells of each population are shown. Data from PBMCs of each patient or a HI are presented as positive controls or negative controls. The left lane shows the size marker.