The flow cytometric assay for unlabeled and biotin-labeled PS⁺ cells.

This analysis is similar to that shown in Figure 4, except that after incubation with SA-PE, the cells were incubated with Annexin V-FITC as described in “Materials and methods.” For patient H7-1, 2 time points are shown: 10 minutes and 4 days after infusion, with the labeled HDE cells consistently having a higher percentage of PS⁺ cells.