Analysis of Hrk and apoptosis in etoposide-treated FDCP-Mix cells.

(A) Cells were treated for different times with etoposide in the presence of IL-3 and then analyzed by flow cytometry with fluorescein isothiocyanate-labeled annexin V. Numbers above the selected regions indicate the percentage of apoptotic cells. (B) Western blot analysis of Hrk and Bax expression in FDCP-Mix cells treated with etoposide for 12 and 24 hours in the presence of IL-3.