ANXA5 and B-cell chronic lymphocytic leukemia: Analysis of cell death by flow cytometry using FITC-Annexin V and PI staining (Supplementary Figure 1) confirmed that fludarabine induces apoptosis in CLL cells, most of cells being Annexin-V+/PI− after 48 h of treatment, and that aphidicolin could increase fludarabine-induced apoptosis.