RESUMO
The aim of the present study was to evaluate the histological changes that might result from the long-term exposure to static and time varying electromagnetic fields [EM] of extremely low frequency on the skin of albino rats. This work was carried out on 15 adult male albino rats divided into three equal groups: Group I served as a normal control, group II was exposed to 10 mT static electromagnetic field two hours/day for one month and group III was exposed to 10 mT time varying electromagnetic field of extremely low frequency [50 Hz] for two hours/day for one month. By the end of the experiment, the animals were sacrificed by decapitation and specimens from the skin of each rat were taken and processed for electron microscopic and light microscopic examination by routine H and E, Gomoriis trichrome and orcein stains. The study concluded that the long-term exposure to magnetic fields may induce structural changes in the skin of albino rats being more prominent with time varying than with static electromagnetic field