Development of the exposure apparatus of intermediate frequency magnetic field for mice and biological effects on blood properties

To explore the possible non-thermal biological effects of the intermediate frequency magnetic field, we have developed the exposure apparatus for 85 kHz time varying magnetic field. When the current of 30Arms is applied to the solenoidal coil, effective value of alternating magnetic flux density 6.5 mT is obtained. It is found that, induced electric field of 7.8V/m, that is whole body average, will be achieved by this exposure system. As preliminary experiment, we exposed this magnetic field to mice for 1 hour and examined the effect on blood properties.