Effects of 100-Hz magnetic fields with various waveforms on the development of chick embryos |
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Authors: | J. Juutilainen M. Harri K. Saali T. Lahtinen |
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Affiliation: | (1) Department of Environmental Hygiene, University of Kuopio, SF-70211 Kuopio, Finland;(2) Department of Applied Zoology, Univeristy of Kuopio, SF-70211 Kuopio, Finland;(3) Department of Radiotherapy, University Central Hospital, SF-70211 Kuopio, Finland |
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Abstract: | Summary Chick embroys were exposed during their 52 first hours of development to 100-Hz magnetic fields. Sinusoidal, square and pulsed waveforms were used at average field strengths from 0.1 A/m to 80 A/m. After exposure, the embryos were examined for abnormalities and classified by the developmental stages. When bipolar oscillations (oscillating at both sides of the zero-level) were used, the percentage of abnormal embryos was significantly increased above 1 A/m. In exposure to unipolar square waves, no significant effect on the percentage of abnormalities could be demonstrated. The developmental stage was possibly affected by unipolar square waves at 0.1 A/m, all other field strengths and wave-forms being apparently ineffective. |
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