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To study whether magnetic fields with a asymmetrical sawtooth waveform could influence the early development of chick embryos.
285 fertilized eggs were divided into the exposure group (n=149) and control group (n=136). Exposure eggs were exposed to three different magnetic flux densities (0.1, 1.5 and 16 µT) during the first two days of development.
eight coils with a diameter of 6 cm, 8.3 cm long, made of 98 turns of 0.7 mm enamelled copper wire; coils connected in parallel; exposure system placed inside an incubator at a constant temperature of 38°C ± 0.2°C; each egg placed horizontally inside one coil; electric equipment placed half a meter from the incubator chamber and the fan was covered with magnetic shielding alloy to limit the 50 Hz background fields