Percentage of DHR⁺ cells after cell infusion (day 0). Flow cytometric analysis was performed at various time points for each patient to assess for oxidase-positive cells in the peripheral blood. Each patient had undetectable DHR before beginning the therapy. The percentage is plotted on a logarithmic scale with each patient having a different range starting at 0.1 for patient 1, 0.001 for patient 2, and 0.01 for patient 3.