Magnetic FieldsElectromagnetic FieldsMagneticsMagnetic Field TherapyLeukemia, Radiation-InducedRadio WavesParamecium caudatumOccupational ExposureImplants, ExperimentalElectric WiringMagnetic Resonance ImagingPhantoms, ImagingTime FactorsMagnetsElectromagnetic PhenomenaRadiation, NonionizingElectricityMagnetic PhenomenaVisual FieldsMagnetometryFerrosoferric Oxide