The effect of incubation time (1 to 20 hours) with DFO (150 μmol/L) or 311 (25 μmol/L) on mRNA levels of the TfR, N-myc, WAF1, GADD45, mdm-2, and β-actin in BE-2 neuroblastoma cells. (I-A) Ethidium bromide staining of the agarose gel; (I-B) TfR; (I-C) N-myc; (I-D) WAF1; (I-E) GADD45; (I-F) β-actin. The result illustrated is a typical experiment from three experiments performed.