Mononuclear cell subset counts in the blood of blood stem cell donors before and at about 1 year after harvest, showing that B, T, and NK cell counts are not low but that monocyte counts may be low at about 1 year after harvest.

Each patient is represented by a specific symbol. Two of the 9 donors were studied only at about 1 year and not before harvest (gray diamond and gray circle). The thick horizontal lines denote the normal “range” (10th-90th percentile of 103 adult healthy volunteers).