Percentage of transduced cells measured in the peripheral blood.

The gene-marking levels in patient 1 were analyzed by PCR. The percentage of cells positive for the GP91phox transgene is represented by dashed lines, and the percentage positive for TdRev, by solid lines. Marking in myeloid cells is shown as circles and in T cells as triangles. Overall marking averaged about 0.01% for both vectors and in both lineages.