Moreover, Giorgi et al. (85) reported that a pulsed 50 Hz, 1 mT MF did not protect human neuroblastoma BE(2)C cells against the apoptotic effect of hydrogen peroxide, and this was confirmed by the lack of any significant effect of the PEMF on the H2O2-dependent increase of γ-H2AX-positive nuclei, thus suggesting that pulsed ELF fields may elicit different effects on neuroblastoma cells depending on physical parameters of the applied MF. This evidence concerns the gene H2AX and neuroblastoma.