Fig. 4

Flow cytometric analysis of cell death induced in PC-3 cells treated with deferoxamine, \(\frac{1}{2}\)× IC₅₀ and IC₅₀ values of each compound after 24 h. a Untreated, b 0.3 N HCl, c deferoxamine (80 µM), d 4-PMPB + deferoxamine (122.303 + 80 µM), e 4-EMPB + deferoxamine (107.44 + 80 µM), f 4-MMPB + deferoxamine (100.76 + 80 µM), g 4-PMPB (61.15 µM), h 4-PMPB (122.303 µM), i 4-EMPB (53.72 µM), j 4-EMPB (107.44 µM), k 4-MMPB (50.38 µM), l 4-MMPB (100.76 µM) and m cisplatin