Flow cytometry plots. (A) Plot showing gating of the lymphocyte-monocyte population. (B) Plot showing the CD45⁺ and CD45^- fractions of the CD38⁺ PCs gated separately. (C) Plot showing CD52 expression on the CD45⁺/CD38⁺ cells. (D) Plot demonstrating monoclonality of the CD45⁺ cells; kappa or lambda staining is on the x-axis. (E) Plot showing CD52 expression on the CD45^-/CD38⁺ cells. (F) Plot demonstrating monoclonality of the CD45^- cells; kappa or lambda staining is on the x-axis.