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In order to investigate the effects of intermittent exposure extremely low frequency magnetic field on embryonic development of fish, Zebrafish was selected to serve as the study object to study the embryonic development effect of intermittent exposure to magnetic fields. Hatching fertilized eggs of zebrafish was placed in the magnetic field of 50Hz and 100μT, and divided into five groups which include control group, “1h exposure/5h intermittence”, “2h exposure/4h intermittence”, “3h exposure/3h intermittence” and full day exposure according to daily exposure time. Then, it was necessary to analyze the difference between relevant embryonic development indexes of each group. The results showed that at 96h of zebrafish embryonic development, there was no significant difference between survival rate, aberration rate, hatching rate of exposed embryos in each magnetic field and the control group (probability P>0.05); Heart rate gradually increased with the increase of embryo and there were no significant differences between groups (P>0.05). The study showed that the selected magnetic field exposure conditions had no significant effect on embryonic development of fish.

Study on Effect of Intermittent Exposure to Extremely Low Frequency Magnetic Fields on Development of Zebrafish Embryos