著者

宮越 順二 OHTSU SHUJI TATSUMI-MIYAJIMA JUNKO TAKEBE HIRAKU

出版者

日本放射線影響学会

雑誌

Journal of Radiation Research (ISSN:04493060)

巻号頁・発行日

vol.35, no.1, pp.26-34, 1994-03

被引用文献数

20 24

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To examine the biological effects of extremely low frequency magnetic field (ELFMF), we have designed and manufactured a new equipment for long-term and high-density exposure of cells to ELFMF. The ELFMF exposure system consists of a generator of magnets with a bult-in CO_2 incubator, an alternating current (AC) power supply, a gas compressor and a thermocontroller for the incubator, and a cooling unit for the magnets. The CO_2 incubator made of acrylic resin is inserted into the inner-space of the silicon steel strip-cores. In this system, the temperature of the incubator is maintained at 37±0.5°C. The maximum magnetic flux density on the exposure area of the incubator is 500 mT (T; tesla) at a current of 556 Arms (rms; root mean square) at 50 Hz. The long-term (up to 120 hr) exposure of 400 mT ELFMF did not affect the growth of both HL6ORG and CCRF-CEM cells originated from human leukemia.